{"id":47447,"date":"2025-07-02T12:12:22","date_gmt":"2025-07-02T12:12:22","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=47447"},"modified":"2025-07-02T12:12:23","modified_gmt":"2025-07-02T12:12:23","slug":"ground-state-electron-configuration-for-an-atom-of-selenium","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/ground-state-electron-configuration-for-an-atom-of-selenium\/","title":{"rendered":"Ground-state electron configuration for an atom of selenium"},"content":{"rendered":"\n<p>Ground-state electron configuration for an atom of selenium<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>The ground-state electron configuration for an atom of selenium (Se) can be written as:<\/p>\n\n\n\n<p><strong>1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b2 3d\u00b9\u2070 4p\u2074<\/strong><\/p>\n\n\n\n<p>Here\u2019s how this configuration is determined:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Atomic Number of Selenium<\/strong>: Selenium (Se) has an atomic number of 34, which means it has 34 electrons in its neutral atom.<\/li>\n\n\n\n<li><strong>Filling Order<\/strong>: Electrons are arranged in atomic orbitals in order of increasing energy, following the <em>Aufbau principle<\/em>, the <em>Pauli exclusion principle<\/em>, and <em>Hund&#8217;s rule<\/em>.\n<ul class=\"wp-block-list\">\n<li><strong>1s\u00b2<\/strong>: The first energy level (n=1) contains only the 1s orbital, which can hold a maximum of 2 electrons.<\/li>\n\n\n\n<li><strong>2s\u00b2 2p\u2076<\/strong>: The second energy level (n=2) contains 2s and 2p orbitals. The 2s orbital holds 2 electrons, and the 2p orbital holds 6 electrons, filling it completely.<\/li>\n\n\n\n<li><strong>3s\u00b2 3p\u2076<\/strong>: The third energy level (n=3) contains 3s and 3p orbitals. The 3s orbital holds 2 electrons, and the 3p orbital holds 6 electrons, filling it as well.<\/li>\n\n\n\n<li><strong>4s\u00b2 3d\u00b9\u2070 4p\u2074<\/strong>: The fourth energy level (n=4) starts with the 4s orbital, which holds 2 electrons. After that, electrons fill the 3d orbital (which is lower in energy than the 4p), so it holds 10 electrons. Finally, the 4p orbital holds the remaining 4 electrons.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Electron Distribution<\/strong>: The electron configuration shows how electrons are distributed across different orbitals of an atom, and it reflects the stability of the atom. Selenium, being a group 16 element, has 4 electrons in its outermost p-orbital (4p\u2074), contributing to its chemical properties.<\/li>\n<\/ol>\n\n\n\n<p>This arrangement is stable in the ground state because it follows the lowest energy configuration for the electrons.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/07\/learnexams-banner5-241.jpeg\" alt=\"\" class=\"wp-image-47455\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/07\/learnexams-banner5-241.jpeg 1024w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/07\/learnexams-banner5-241-300x300.jpeg 300w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/07\/learnexams-banner5-241-150x150.jpeg 150w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/07\/learnexams-banner5-241-768x768.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Ground-state electron configuration for an atom of selenium The Correct Answer and Explanation is: The ground-state electron configuration for an atom of selenium (Se) can be written as: 1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b2 3d\u00b9\u2070 4p\u2074 Here\u2019s how this configuration is determined: This arrangement is stable in the ground state because it follows the lowest [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-47447","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/47447","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=47447"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/47447\/revisions"}],"predecessor-version":[{"id":47456,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/47447\/revisions\/47456"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=47447"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=47447"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=47447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}