Artikel Kimia kelas 12 ini menjelaskan tentang gas mulia yang merupakan unsur-unsur golongan VIIIA dalam tabel periodik. Mulai dari pengertian, sifat-sifatnya, serta penjelasan lengkap unsur-unsurnya.
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Teman-teman, pada artikel golongan-golongan unsur dalam sistem periodik unsur, kamu pasti sudah tahu kalau unsur-unsur pada tabel periodik dikelompokkan menjadi beberapa golongan, di antaranya golongan logam alkali, logam alkali tanah, halogen, gas mulia, dan unsur transisi.
Dari lima golongan tersebut, ada satu golongan yang unsur-unsurnya memiliki sifat yang sangat sukar untuk bereaksi dengan unsur lain, lho, yaitu gas mulia.
Kenapa sih unsur-unsur gas mulia bisa sulit untuk bereaksi? Unsur-unsur apa saja ya yang masuk ke dalam golongan gas mulia?
Nah, bagi kamu yang penasaran, artikel ini telah merangkum semua jawabannya dan menjelaskannya secara lengkap dan mudah. Oleh karena itu, langsung saja kita simak artikelnya berikut ini!
Apa itu Unsur Gas Mulia?
Sebenarnya, gas mulia adalah sebutan untuk unsur-unsur golongan VIIIA dalam tabel periodik. Disebut gas mulia karena semua unsur pada golongan ini berwujud gas dan memiliki konfigurasi elektron yang sangat stabil, sehingga akan sangat sulit untuk bereaksi dengan unsur lainnya.
Unsur-unsur gas mulia antara lain adalah helium (He), neon (Ne), argon (Ar), Kripton (Kr), Xenon (Xe), dan Radon (Rn).
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Sifat-sifat Gas Mulia
Gas mulia memiliki sifat-sifat yang bisa kamu ketahui, nih. Sifat-sifat ini dibedakan menjadi 3 macam, yaitu sifat atomik, fisik, dan kimia.
1. Sifat Atomik
Pada sifat atomik, molekul-molekul gas mulia terdiri atas satu atom (monoatom). Unsur-unsur gas mulia memiliki jari-jari atom yang semakin besar apabila dilihat dari atas ke bawah (helium ke radon). Tapi, energi ionisasinya semakin kecil seiring dengan bertambahnya jari-jari atom, sehingga semakin mudah melepaskan elektron.
Unsur-unsur golongan ini memiliki elektron valensi 2 dan 8 yang menandakan semua elektron pada kulitnya sudah stabil dan berpasangan.
2. Sifat Fisik
Berdasarkan sifat fisisnya, gas mulia memiliki titik leleh dan titik didih yang sangat rendah. Titik didih dan titik leleh unsur-unsur gas mulia lebih kecil dari suhu kamar (25°C), sehingga seluruh unsur gas mulia berwujud gas.
Titik leleh dan titik didih unsur-unsur gas mulia dari atas ke bawah (helium ke radon) akan semakin bertambah seiring dengan bertambahnya massa atom dan jari-jari atom. Kerapatan (densitas) unsur-unsur gas mulia juga akan semakin bertambah dari atas ke bawah.
3. Sifat Kimia
Unsur-unsur gas mulia memiliki konfigurasi elektron yang stabil karena semua elektron pada kulit terluarnya sudah berpasangan/penuh. Hal ini menyebabkan gas mulia cenderung sulit bereaksi dengan unsur lainnya.
Namun, saat ini sudah ada beberapa unsur gas mulia yang dapat bereaksi dengan unsur lain yang sangat elektronegatif, yaitu xenon dan kripton. Selain itu, konfigurasi elektron yang stabil ini juga menyebabkan gas mulia biasa digunakan sebagai penyingkatan konfigurasi elektron bagi unsur lain.
Contohnya:
Ne = 1s2 2s2 2p6
Ar = 1s2 2s2 2p6 3s2 3p6. Konfigurasi elektron Ar dapat disingkat menjadi,
Ar = [Ne] 3s2 3p6
Na = 1s2 2s2 2p6 3s1, dapat disingkat
Na = [Ne] 3s1
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Macam-Macam Gas Mulia
Seperti yang sudah disebutkan sebelumnya, unsur-unsur gas mulia terdiri dari 6 unsur, yaitu helium, neon, argon, kripton, xenon, dan radon. Masing-masing unsur tersebut akan dijelaskan lebih lengkap berikut ini. Tetap simak, ya!
Helium merupakan unsur gas mulia terbanyak kedua di alam semesta setelah hidrogen. Helium terbentuk dari peluruhan zat radioaktif, yaitu uranium dan thorium.
Gas ini merupakan zat yang ringan dan tidak mudah terbakar. Meskipun wujudnya berbentuk gas, helium dapat dicairkan dalam suhu yang amat rendah dan tekanan yang tinggi.
Selain tampilannya yang tidak berwarna, helium juga tidak berbau, tidak berasa, dan tidak beracun. Namun, apabila terhirup tubuh, gas ini dapat menyebabkan suara menjadi tinggi, sakit kepala, dan perasaan tercekik.
Manfaat helium yang lain adalah pada wujud cair helium dapat digunakan sebagai zat pendingin karena memiliki titik uap yang sangat rendah.
Neon ditemukan oleh ahli kimia bernama Sir William Ramsay dan Morris M. Travers pada tahun 1898 di London, Inggris. Ketika Ramsay mendinginkan beberapa sampel udara hingga menjadi cairan dan memanaskan cairan tersebut, ia mengambil gas yang keluar saat cairan itu mendidih. Ramsay lalu memisahkan sisa-sisa gas yang belum teridentifikasi dan menemukan zat-zat baru, yaitu kripton dan neon.
Meskipun gas ini tidak berwarna, neon akan memancarkan warna oranye kemerahan jika berada pada medan listrik bertegangan tinggi.
Selain kegunaannya sebagai pengisi lampu neon, unsur gas mulia ini juga dapat berfungsi sebagai penangkal petir, pengisi tabung televisi, dan dalam wujud cair neon dapat digunakan sebagai zat pendingin.
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Argon merupakan gas terbanyak ketiga yang terdapat dalam atmosfer bumi setelah nitrogen dan oksigen. Argon terbentuk dari peluruhan zat radioaktif berupa kalium yang terdapat di kerak bumi.
Unsur ini memiliki tingkat kelarutan dalam air yang sama dengan oksigen dan bahkan 2,5 kali lebih mudah larut dibandingkan dengan nitrogen. Argon bersifat tidak reaktif (inert), tidak mudah terbakar, dan tidak beracun.
Ketika berada dalam medan listrik, argon akan memunculkan warna lilak atau ungu. Unsur gas mulia ini banyak digunakan di bidang industri, baik dalam wujud gas maupun cair.
Kegunaan lain argon adalah sebagai gas inert yang melindungi dari bunga api listrik saat proses pengelasan, produksi titanium dan unsur reaktif lainnya, serta digunakan sebagai lapisan pelindung dalam pembuatan kristal silikon dan germanium.
Kripton merupakan gas yang paling langka di atmosfer dari unsur-unsur gas mulia lainnya. Sama halnya dengan neon, kripton ditemukan oleh ahli kimia bernama Sir William Ramsay dan Morris M. Travers dari sisa-sisa gas pada sampel udara cair yang dipanaskan kembali hingga mendidih.
Pada kondisi normal, kripton bersifat tidak berwarna dan tidak berbau. Namun, apabila diletakkan pada medan listrik bertegangan tinggi, kripton akan memancarkan cahaya berwarna putih.
Setelah Sir William Ramsay dan Morris M. Travers menemukan kripton dan neon, di tahun yang sama, mereka kembali menemukan unsur gas mulia yang lain, yaitu xenon.
Xenon ditemukan dalam residu yang tersisa dari hasil pemanasan sampel udara cair. Xenon adalah gas berat yang langka dan tidak berbau. Gas ini bersifat tidak reaktif pada sebagian besar bahan kimia.
Xenon akan memancarkan cahaya berwarna biru saat berada pada medan listrik bertegangan tinggi. Saat ini, senyawa xenon telah banyak dibuat, contohnya seperti xenon trioksida (XeO3) dan xenon tetraoksida (XeO4) yang sangat eksplosif (mudah meledak). Xenon juga dianggap tidak beracun, meskipun banyak senyawanya yang beracun karena sifat oksidasinya yang kuat.
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Radon merupakan unsur gas mulia yang bersifat radioaktif. Radon terbentuk dari penguraian radium, zat kimia radioaktif dari unsur logam. Radon tidak mudah bereaksi secara kimia, namun sangat berbahaya bagi kesehatan karena sifatnya yang radioaktif.
Radon tidak berwarna, tapi apabila didinginkan hingga membeku (padat), radon akan berwarna kuning, sedangkan radon berwujud cair akan berwarna oranye kemerahan.
Meskipun kegunaan radon sebagai radioterapi kanker, apabila gas ini terhisap cukup banyak, justru akan menimbulkan penyakit kanker paru-paru. Hiii… serem!
—
Nah, teman-teman, itulah tadi penjelasan mengenai gas mulia beserta sifat dan kegunaannya, ya. Semoga pengetahuan kalian jadi bertambah setelah membaca artikel ini, ya.
Oh iya, kalau kalian merasa tertarik untuk mempelajari materi ini lebih dalam lagi, kalian bisa coba belajar bareng kakak-kakak Tutor berpengalaman di Ruangguru Privat!
Belajar nggak cuma menyenangkan, tapi kamu juga bakal diajari konsepnya sampai paham! Para pengajar di Ruangguru Privat juga sudah terstandarisasi kualitasnya, loh. Kamu juga bisa pilih nih, mau diajarkan secara langsung (offline) atau daring (online). Fleksibel, kan? Untuk info lebih lanjut, cuss klik link berikut!
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<h1 class="content-title">
Macam-Macam Unsur Gas Mulia, Sifat, dan Manfaatnya | Kimia Kelas 12 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/hani-ammariah" class="">Hani Ammariah</a> </p>
<p class="content-info"><span>November 21, 2024 • </span> <span>7 minutes read</span></p>
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<p><em><img decoding="async" style="width: 820px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Konsep%20Pelajaran%20-%20%20Kimia%20Unsur%202%20Mengenal%20Macam-Macam%20Sifat%20dan%20Unsur%20Gas%20Mulia%20Kimia%20Kelas%2012-04.jpg" alt="Mengenal Macam-Macam Sifat dan Unsur Gas Mulia" /></em></p>
<blockquote>
<p style="text-align: center;"><em><strong><a href="https://www.ruangguru.com/blog/c/kimia/kimia-sma-kelas-12">Artikel Kimia kelas 12</a></strong> ini menjelaskan tentang <strong>gas mulia</strong> yang merupakan unsur-unsur golongan VIIIA dalam tabel periodik. Mulai dari pengertian, sifat-sifatnya, serta penjelasan lengkap unsur-unsurnya.</em></p>
</blockquote>
<p style="text-align: center;">—</p>
<p> </p>
<p style="text-align: justify;">Teman-teman, pada artikel <strong><a href="/blog/golongan-golongan-unsur-dalam-sistem-periodik-unsur" rel="noopener">golongan-golongan unsur dalam sistem periodik unsur</a></strong>, kamu pasti sudah tahu kalau unsur-unsur pada tabel periodik dikelompokkan menjadi beberapa golongan, di antaranya golongan logam alkali, logam alkali tanah, halogen, gas mulia, dan unsur transisi.</p>
<p style="text-align: justify;">Dari lima golongan tersebut, ada satu golongan yang unsur-unsurnya memiliki sifat yang sangat sukar untuk bereaksi dengan unsur lain, lho, yaitu gas mulia.</p>
<p style="text-align: justify;">Kenapa <em>sih</em> unsur-unsur gas mulia bisa sulit untuk bereaksi? Unsur-unsur apa saja ya yang masuk ke dalam golongan gas mulia?</p>
<p style="text-align: justify;"><em>Nah</em>, bagi kamu yang penasaran, artikel ini telah merangkum semua jawabannya dan menjelaskannya secara lengkap dan mudah. Oleh karena itu, langsung saja kita simak artikelnya berikut ini!</p>
<p> </p>
<h2><span style="font-size: 18pt;">Apa itu Unsur Gas Mulia?</span></h2>
<p style="text-align: justify;">Sebenarnya, gas mulia adalah sebutan untuk <strong>unsur-unsur golongan VIIIA dalam tabel periodik</strong>. Disebut gas mulia karena semua unsur pada golongan ini berwujud gas dan memiliki <strong><a href="/blog/konfigurasi-elektron-dan-diagram-orbital" rel="noopener">konfigurasi elektron</a></strong> yang sangat stabil, sehingga akan sangat sulit untuk bereaksi dengan unsur lainnya.</p>
<p style="text-align: justify;">Unsur-unsur gas mulia antara lain adalah <strong>helium (He), neon (Ne), argon (Ar), Kripton (Kr), Xenon (Xe), dan Radon (Rn)</strong>.</p>
<p style="text-align: justify; font-weight: bold;">Baca Juga: <a href="/blog/cara-pencegahan-korosi" rel="noopener">Cara Mencegah Korosi pada Logam</a></p>
<p> </p>
<h2><span style="font-size: 18pt;">Sifat-sifat Gas Mulia</span></h2>
<p style="text-align: justify;">Gas mulia memiliki sifat-sifat yang bisa kamu ketahui, <em>nih</em>. Sifat-sifat ini dibedakan menjadi 3 macam, yaitu sifat atomik, fisik, dan kimia.</p>
<p> </p>
<h3><span style="font-size: 14pt;">1. Sifat Atomik</span></h3>
<p style="text-align: justify;">Pada sifat atomik, molekul-molekul gas mulia terdiri atas<strong> satu atom (monoatom)</strong>. Unsur-unsur gas mulia memiliki <strong>jari-jari atom yang semakin besar</strong> apabila dilihat dari atas ke bawah (helium ke radon). Tapi, <strong>energi ionisasinya semakin kecil</strong> seiring dengan bertambahnya jari-jari atom, sehingga semakin mudah melepaskan elektron.</p>
<p style="text-align: justify;">Unsur-unsur golongan ini memiliki <strong><a href="/blog/konfigurasi-elektron-dan-diagram-orbital" rel="noopener">elektron</a> valensi 2 dan 8</strong> yang menandakan semua elektron pada kulitnya sudah stabil dan berpasangan.</p>
<p> </p>
<h3><span style="font-size: 14pt;">2. Sifat Fisik</span></h3>
<p style="text-align: justify;">Berdasarkan sifat fisisnya, gas mulia memiliki <strong>titik leleh dan titik didih yang sangat rendah</strong>. Titik didih dan titik leleh unsur-unsur gas mulia lebih kecil dari suhu kamar (25°C), sehingga seluruh unsur gas mulia berwujud gas.</p>
<p style="text-align: justify;">Titik leleh dan titik didih unsur-unsur gas mulia dari atas ke bawah (helium ke radon) akan semakin bertambah seiring dengan bertambahnya massa atom dan jari-jari atom. Kerapatan (densitas) unsur-unsur gas mulia juga akan semakin bertambah dari atas ke bawah.</p>
<p> </p>
<h3><span style="font-size: 14pt;">3. Sifat Kimia</span></h3>
<p style="text-align: justify;">Unsur-unsur gas mulia memiliki<strong> konfigurasi elektron yang stabil</strong> karena semua elektron pada kulit terluarnya sudah berpasangan/penuh. Hal ini menyebabkan gas mulia <strong>cenderung sulit bereaksi dengan unsur lainnya</strong>.</p>
<p style="text-align: justify;">Namun, saat ini sudah ada beberapa unsur gas mulia yang dapat bereaksi dengan unsur lain yang sangat elektronegatif, yaitu xenon dan kripton. Selain itu, konfigurasi elektron yang stabil ini juga menyebabkan gas mulia biasa digunakan sebagai penyingkatan konfigurasi elektron bagi unsur lain.</p>
<p style="text-align: justify;">Contohnya:</p>
<p style="text-align: justify; font-size: 16px;">Ne = 1s<sup>2</sup> 2s<sup>2</sup> 2p<sup>6</sup></p>
<p style="text-align: justify; font-size: 16px;">Ar = 1s<sup>2</sup> 2s<sup>2</sup> 2p<sup>6</sup> 3s<sup>2</sup> 3p<sup>6</sup>. Konfigurasi elektron Ar dapat disingkat menjadi,</p>
<p style="text-align: justify; font-size: 16px;">Ar = [Ne] 3s<sup>2</sup> 3p<sup>6</sup></p>
<p style="text-align: justify; font-size: 16px;">Na = 1s<sup>2 </sup>2s<sup>2</sup> 2p<sup>6</sup> 3s<sup>1</sup>, dapat disingkat</p>
<p style="text-align: justify; font-size: 16px;">Na = [Ne] 3s<sup>1</sup></p>
<p><strong>Baca Juga: <a href="/blog/halogen" rel="noopener">Sifat Unsur Halogen dan Manfaatnya dalam Kehidupan Sehari-hari</a></strong></p>
<p> </p>
<h2><span style="font-size: 18pt;">Macam-Macam Gas Mulia</span></h2>
<p style="text-align: justify;">Seperti yang sudah disebutkan sebelumnya, unsur-unsur gas mulia terdiri dari <strong>6 unsur, yaitu helium, neon, argon, kripton, xenon, dan radon</strong>. Masing-masing unsur tersebut akan dijelaskan lebih lengkap berikut ini. Tetap simak, ya!</p>
<p> </p>
<ul>
<li>
<h3><span style="font-size: 14pt;">Helium (He)</span></h3>
</li>
</ul>
<p style="text-align: justify;">Helium merupakan <strong>unsur gas mulia terbanyak kedua di alam semesta setelah hidrogen</strong>. Helium terbentuk dari peluruhan zat radioaktif, yaitu uranium dan thorium.</p>
<p style="text-align: justify;">Gas ini merupakan zat yang <strong>ringan dan tidak mudah terbakar</strong>. Meskipun <strong>wujudnya berbentuk gas</strong>, helium dapat dicairkan dalam suhu yang amat rendah dan tekanan yang tinggi.</p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Terserah_1_-_Kimia_Kelas_XII_-_Gas_Mulia.png" alt="Macam-Macam Sifat dan Unsur Gas Mulia - Helium" width="600" /></p>
<p> </p>
<p style="text-align: justify;">Selain tampilannya yang <strong>tidak berwarna</strong>, helium juga <strong>tidak berbau, tidak berasa, dan tidak beracun</strong>. Namun, apabila terhirup tubuh, gas ini dapat menyebabkan suara menjadi tinggi, sakit kepala, dan perasaan tercekik.</p>
<p style="text-align: justify;">Manfaat helium yang lain adalah pada wujud cair helium dapat digunakan sebagai zat pendingin karena memiliki titik uap yang sangat rendah.</p>
<p> </p>
<ul>
<li>
<h3><span style="font-size: 14pt;">Neon (Ne)</span></h3>
</li>
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<p style="text-align: justify;">Neon ditemukan oleh ahli kimia bernama Sir William Ramsay dan Morris M. Travers pada tahun 1898 di London, Inggris. Ketika Ramsay mendinginkan beberapa sampel udara hingga menjadi cairan dan memanaskan cairan tersebut, ia mengambil gas yang keluar saat cairan itu mendidih. Ramsay lalu memisahkan sisa-sisa gas yang belum teridentifikasi dan menemukan zat-zat baru, yaitu kripton dan neon.</p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Terserah_3_-_Kimia_Kelas_XII_-_Gas_Mulia.png" alt="Macam-Macam Sifat dan Unsur Gas Mulia - Neon" width="600" /></p>
<p> </p>
<p style="text-align: justify;">Meskipun gas ini <strong>tidak berwarna</strong>, neon akan <strong>memancarkan warna oranye kemerahan</strong> jika berada pada medan listrik bertegangan tinggi.</p>
<p style="text-align: justify;">Selain kegunaannya sebagai pengisi lampu neon, unsur gas mulia ini juga dapat berfungsi sebagai penangkal petir, pengisi tabung televisi, dan dalam wujud cair neon dapat digunakan sebagai zat pendingin.</p>
<p><strong>Baca Juga: <a href="/blog/mengetahui-pengertian-sifat-koligatif-pada-larutan" rel="noopener">Mengetahui Sifat Koligatif pada Larutan</a></strong></p>
<p> </p>
<ul>
<li>
<h3><span style="font-size: 14pt;">Argon (Ar)</span></h3>
</li>
</ul>
<p style="text-align: justify;">Argon merupakan <strong>gas terbanyak ketiga yang terdapat dalam atmosfer bumi</strong> setelah nitrogen dan oksigen. Argon terbentuk dari peluruhan zat radioaktif berupa kalium yang terdapat di kerak bumi.</p>
<p style="text-align: justify;">Unsur ini memiliki tingkat kelarutan dalam air yang sama dengan oksigen dan bahkan <strong>2,5 kali lebih mudah larut</strong> dibandingkan dengan nitrogen. Argon bersifat <strong>tidak reaktif (<em>inert</em>), tidak mudah terbakar, dan tidak beracun</strong>.</p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Terserah_2_-_Kimia_Kelas_XII_-_Gas_Mulia.png" alt="Macam-Macam Sifat dan Unsur Gas Mulia - Argon" width="600" /></p>
<p> </p>
<p style="text-align: justify;">Ketika berada dalam medan listrik, argon akan <strong>memunculkan warna lilak atau ungu</strong>. Unsur gas mulia ini banyak digunakan di bidang industri, baik dalam wujud gas maupun cair.</p>
<p style="text-align: justify;">Kegunaan lain argon adalah sebagai gas <em>inert </em>yang melindungi dari bunga api listrik saat proses pengelasan, produksi titanium dan unsur reaktif lainnya, serta digunakan sebagai lapisan pelindung dalam pembuatan kristal silikon dan germanium.</p>
<p> </p>
<ul>
<li>
<h3><span style="font-size: 14pt;"><strong>Kripton (Kr)</strong></span></h3>
</li>
</ul>
<p style="text-align: justify;">Kripton merupakan <strong>gas yang paling langka di atmosfer</strong> dari unsur-unsur gas mulia lainnya. Sama halnya dengan neon, kripton ditemukan oleh ahli kimia bernama Sir William Ramsay dan Morris M. Travers dari sisa-sisa gas pada sampel udara cair yang dipanaskan kembali hingga mendidih.</p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Terserah_5-_Kimia_Kelas_XII_-_Gas_Mulia.png" alt="Macam-Macam Sifat dan Unsur Gas Mulia - Kripton" width="600" /></p>
<p> </p>
<p style="text-align: justify;">Pada kondisi normal, kripton bersifat tidak berwarna dan tidak berbau. Namun, apabila diletakkan pada medan listrik bertegangan tinggi, kripton akan memancarkan cahaya berwarna putih.</p>
<p> </p>
<ul>
<li>
<h3><span style="font-size: 14pt;"><strong>Xenon (Xe)</strong></span></h3>
</li>
</ul>
<p style="text-align: justify;">Setelah Sir William Ramsay dan Morris M. Travers menemukan kripton dan neon, di tahun yang sama, mereka kembali menemukan unsur gas mulia yang lain, yaitu xenon.</p>
<p style="text-align: justify;">Xenon ditemukan dalam residu yang tersisa dari hasil pemanasan sampel udara cair. Xenon adalah <strong>gas berat yang langka dan tidak berbau</strong>. Gas ini <strong>bersifat tidak reaktif</strong> pada sebagian besar bahan kimia.</p>
<p style="text-align: justify;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Konsep%20Pelajaran%20-%20%20Kimia%20Unsur%202%20Mengenal%20Macam-Macam%20Sifat%20dan%20Unsur%20Gas%20Mulia%20Kimia%20Kelas%2012-03.jpg" alt="Macam-Macam Sifat dan Unsur Gas Mulia - Xenon" width="600" /></p>
<p> </p>
<p style="text-align: justify;">Xenon akan <strong>memancarkan cahaya berwarna biru</strong> saat berada pada medan listrik bertegangan tinggi. Saat ini, senyawa xenon telah banyak dibuat, contohnya seperti xenon trioksida (XeO<span style="font-size: 9px;">3</span>) dan xenon tetraoksida (XeO<span style="font-size: 9px;">4</span>) yang sangat eksplosif (mudah meledak). Xenon juga dianggap <strong>tidak beracun</strong>, meskipun banyak senyawanya yang beracun karena sifat oksidasinya yang kuat.</p>
<p><strong>Baca Juga: <a href="/blog/senyawa-turunan-alkana-alkohol" rel="noopener">Yuk, Berkenalan dengan Senyawa Turunan Alkana: Alkohol</a></strong></p>
<p> </p>
<ul>
<li>
<h3><span style="font-size: 14pt;">Radon (Rn)</span></h3>
</li>
</ul>
<p style="text-align: justify;">Radon merupakan unsur gas mulia yang <strong>bersifat radioaktif</strong>. Radon terbentuk dari penguraian radium, zat kimia radioaktif dari unsur logam. Radon <strong>tidak mudah bereaksi secara kimia</strong>, namun <strong>sangat berbahaya bagi kesehatan</strong> karena sifatnya yang radioaktif.</p>
<p style="text-align: justify;">Radon <strong>tidak berwarna</strong>, tapi apabila didinginkan hingga membeku (padat), radon akan berwarna kuning, sedangkan radon berwujud cair akan berwarna oranye kemerahan.</p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Terserah_6_-_Kimia_Kelas_XII_-_Gas_Mulia.png" alt="Macam-Macam Sifat dan Unsur Gas Mulia - Radon" width="600" /></p>
<p> </p>
<p style="text-align: justify;">Meskipun kegunaan radon sebagai radioterapi kanker, apabila gas ini terhisap cukup banyak, justru akan menimbulkan penyakit kanker paru-paru. <em>Hiii</em>… serem!</p>
<p style="text-align: center;">—</p>
<p style="text-align: justify;"><em>Nah</em>, teman-teman, itulah tadi penjelasan mengenai gas mulia beserta sifat dan kegunaannya, ya. Semoga pengetahuan kalian jadi bertambah setelah membaca artikel ini, ya.</p>
<p style="text-align: justify;">Oh iya, kalau kalian merasa tertarik untuk mempelajari materi ini lebih dalam lagi, kalian bisa coba belajar bareng kakak-kakak Tutor berpengalaman di <strong><a href="https://www.ruangguru.com/privat/kimia">Ruangguru Privat</a></strong>!</p>
<p style="text-align: justify;">Belajar nggak cuma menyenangkan, tapi kamu juga bakal diajari konsepnya sampai paham! Para pengajar di Ruangguru Privat juga sudah terstandarisasi kualitasnya, loh. Kamu juga bisa pilih nih, mau diajarkan secara langsung (<em>offline</em>) atau daring (<em>online</em>). Fleksibel, kan? Untuk info lebih lanjut, cuss klik link berikut!</p>
<p><a href="https://cta.ruangguru.com/blog-rg-10-privat-b"><img decoding="async" class="aligncenter size-medium" src="https://cdn-web-2.ruangguru.com/landing-pages/assets/84b6f2c7-9c9c-480d-a218-7961334af9ce.png" alt="CTA Ruangguru Privat" /></a></p>
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<div class="d-lg-none text-center">
<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.facebook.com/ruanggurucom/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/facebook.png" loading="lazy" alt="Logo Facebook Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://twitter.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/twitter.png" loading=" lazy" alt="Logo Twitter Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.youtube.com/ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/youtube.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/youtube.png" loading=" lazy" alt="Logo Youtube Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.linkedin.com/company/ruangguru-com">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/linkedin.png" loading=" lazy" alt="Logo LinkedIn Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.tiktok.com/@ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/tiktok.png" loading=" lazy" alt="Logo TikTok Footer" width="32px" height="32px" />
</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>