{"id":220331,"date":"2025-05-28T06:37:32","date_gmt":"2025-05-28T06:37:32","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=220331"},"modified":"2025-05-28T06:37:34","modified_gmt":"2025-05-28T06:37:34","slug":"give-the-ground-state-electron-configuration-for-silicon-si-using-noble-gas-shorthand","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/28\/give-the-ground-state-electron-configuration-for-silicon-si-using-noble-gas-shorthand\/","title":{"rendered":"Give the ground-state electron configuration for silicon (Si) using noble-gas shorthand."},"content":{"rendered":"\n<p>Give the ground-state electron configuration for silicon (Si) using noble-gas shorthand.<\/p>\n\n\n\n<p>Give the ground-state electron configuration for silicon (Si) using noble-gas shorthand.<\/p>\n\n\n\n<p>Express your answer in condensed form as a series of orbitals. (For example, [Ar]4s23d8 would be entered as [Ar]4s^23d^8.)<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p><strong>Correct Answer:<\/strong><br><strong>[Ne]3s\u00b23p\u00b2<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Explanation <\/strong><\/h3>\n\n\n\n<p>The ground-state electron configuration of an element describes the arrangement of its electrons in orbitals when the atom is in its lowest energy state. To write the electron configuration using <strong>noble-gas shorthand<\/strong>, we substitute the configuration of the nearest <strong>preceding noble gas<\/strong> with its symbol in brackets.<\/p>\n\n\n\n<p><strong>Step 1: Determine the atomic number of silicon.<\/strong><br>Silicon (Si) has an atomic number of <strong>14<\/strong>, meaning it has <strong>14 electrons<\/strong> in its neutral ground state.<\/p>\n\n\n\n<p><strong>Step 2: Identify the nearest noble gas with a lower atomic number.<\/strong><br>The noble gases are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>He (Z=2)<\/li>\n\n\n\n<li>Ne (Z=10)<\/li>\n\n\n\n<li>Ar (Z=18)<\/li>\n\n\n\n<li>etc.<\/li>\n<\/ul>\n\n\n\n<p>The nearest noble gas before Si is <strong>Neon (Ne, Z = 10)<\/strong>. Neon has the configuration <strong>1s\u00b2 2s\u00b2 2p\u2076<\/strong>, accounting for 10 electrons.<\/p>\n\n\n\n<p><strong>Step 3: Add the remaining electrons after [Ne].<\/strong><br>Si has 14 electrons in total, so we subtract 10 (from Ne), leaving <strong>4 electrons<\/strong> to distribute.<\/p>\n\n\n\n<p>These 4 electrons go into the <strong>third energy level<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>2 electrons<\/strong> fill the <strong>3s<\/strong> orbital \u2192 <strong>3s\u00b2<\/strong><\/li>\n\n\n\n<li><strong>2 electrons<\/strong> go into the <strong>3p<\/strong> orbital \u2192 <strong>3p\u00b2<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Thus, the configuration is:<br><strong>[Ne]3s\u00b23p\u00b2<\/strong><\/p>\n\n\n\n<p>This configuration shows that the valence electrons for silicon are in the <strong>third shell<\/strong>, specifically in the <strong>3s and 3p orbitals<\/strong>. These 4 valence electrons (2 from 3s and 2 from 3p) explain silicon&#8217;s typical <strong>tetravalent bonding behavior<\/strong>, such as in silicon dioxide (SiO\u2082) or silicon-based semiconductors.<\/p>\n\n\n\n<p>Using the noble-gas shorthand simplifies electron configurations, especially for elements with many electrons, by eliminating the need to write the entire configuration of core electrons. This is especially useful in chemistry when analyzing or comparing valence electron arrangements, which are most relevant to chemical reactivity and bonding.<strong>Correct Answer:<\/strong><br><strong>[Ne]3s\u00b23p\u00b2<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>The nearest noble gas before Si is <strong>Neon (Ne, Z = 10)<\/strong>. Neon has the configuration <strong>1s\u00b2 2s\u00b2 2p\u2076<\/strong>, accounting for 10 electrons.<\/p>\n\n\n\n<p><strong>Step 3: Add the remaining electrons after [Ne].<\/strong><br>Si has 14 electrons in total, so we subtract 10 (from Ne), leaving <strong>4 electrons<\/strong> to distribute.<\/p>\n\n\n\n<p>These 4 electrons go into the <strong>third energy level<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>2 electrons<\/strong> fill the <strong>3s<\/strong> orbital \u2192 <strong>3s\u00b2<\/strong><\/li>\n\n\n\n<li><strong>2 electrons<\/strong> go into the <strong>3p<\/strong> orbital \u2192 <strong>3p\u00b2<\/strong><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/05\/learnexams-banner10-27.jpeg\" alt=\"\" class=\"wp-image-220332\"\/><\/figure>\n\n\n\n<p>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Give the ground-state electron configuration for silicon (Si) using noble-gas shorthand. Give the ground-state electron configuration for silicon (Si) using noble-gas shorthand. Express your answer in condensed form as a series of orbitals. (For example, [Ar]4s23d8 would be entered as [Ar]4s^23d^8.) The Correct Answer and Explanation is: Correct Answer:[Ne]3s\u00b23p\u00b2 Explanation The ground-state electron configuration of [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-220331","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/220331","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=220331"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/220331\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=220331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=220331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=220331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}