{"id":199045,"date":"2025-03-10T17:11:25","date_gmt":"2025-03-10T17:11:25","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=199045"},"modified":"2025-03-10T17:11:27","modified_gmt":"2025-03-10T17:11:27","slug":"predict-the-ground-state-electron-configuration-of-each-ion","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/10\/predict-the-ground-state-electron-configuration-of-each-ion\/","title":{"rendered":"Predict the ground-state electron configuration of each ion"},"content":{"rendered":"\n<p>Predict the ground-state electron configuration of each ion. Use the abbreviated noble gas notation. Ru2+. W3+ B UX2<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Electron Configuration of Ions Using Noble Gas Notation<\/h3>\n\n\n\n<p>To determine the ground-state electron configuration of each ion, we must first write the electron configuration of the neutral atom and then account for the loss or gain of electrons due to ion formation.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1. Ruthenium (Ru\u00b2\u207a)<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Atomic number: <strong>44<\/strong><\/li>\n\n\n\n<li>Neutral electron configuration: <strong>[Kr] 5s\u00b2 4d\u2076<\/strong><\/li>\n\n\n\n<li>For Ru\u00b2\u207a: Removal of two electrons occurs from the <strong>5s orbital first<\/strong>, followed by the <strong>4d orbital<\/strong>.<\/li>\n\n\n\n<li><strong>Ru\u00b2\u207a configuration:<\/strong> <strong>[Kr] 4d\u2076<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2. Tungsten (W\u00b3\u207a)<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Atomic number: <strong>74<\/strong><\/li>\n\n\n\n<li>Neutral electron configuration: <strong>[Xe] 6s\u00b2 4f\u00b9\u2074 5d\u2074<\/strong><\/li>\n\n\n\n<li>For W\u00b3\u207a: Remove three electrons starting with the <strong>6s orbital<\/strong>, followed by the <strong>5d orbital<\/strong>.<\/li>\n\n\n\n<li><strong>W\u00b3\u207a configuration:<\/strong> <strong>[Xe] 4f\u00b9\u2074 5d\u00b9<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3. Boron (B)<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Atomic number: <strong>5<\/strong><\/li>\n\n\n\n<li>Neutral electron configuration: <strong>[He] 2s\u00b2 2p\u00b9<\/strong><\/li>\n\n\n\n<li>Boron typically forms <strong>B\u00b3\u207a<\/strong> in some compounds, removing three electrons.<\/li>\n\n\n\n<li><strong>B\u00b3\u207a configuration:<\/strong> <strong>[He]<\/strong> (since all valence electrons are removed)<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>4. UX\u2082 (Assuming U = Uranium)<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Uranium atomic number: <strong>92<\/strong><\/li>\n\n\n\n<li>Neutral electron configuration: <strong>[Rn] 7s\u00b2 5f\u2074 6d\u00b9<\/strong><\/li>\n\n\n\n<li>The oxidation state depends on X (a halogen or ligand), but common uranium oxidation states include <strong>U\u2074\u207a and U\u2076\u207a<\/strong>.<\/li>\n\n\n\n<li>If UX\u2082 suggests <strong>U\u2074\u207a<\/strong>, remove four electrons.<\/li>\n\n\n\n<li><strong>U\u2074\u207a configuration:<\/strong> <strong>[Rn] 5f\u00b2<\/strong><\/li>\n\n\n\n<li>If UX\u2082 suggests <strong>U\u2076\u207a<\/strong>, remove six electrons.<\/li>\n\n\n\n<li><strong>U\u2076\u207a configuration:<\/strong> <strong>[Rn] 5f\u2070<\/strong><\/li>\n<\/ul>\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<ol class=\"wp-block-list\">\n<li><strong>Electron removal follows energy levels:<\/strong> Electrons are removed first from the <strong>outermost orbitals<\/strong> (highest principal quantum number) before inner orbitals.<\/li>\n\n\n\n<li><strong>Transition metals lose s-electrons before d-electrons:<\/strong> Even though 5s fills before 4d (Ru case), it is lost first when forming cations.<\/li>\n\n\n\n<li><strong>Lanthanide contraction affects configurations:<\/strong> W\u00b3\u207a retains <strong>4f\u00b9\u2074<\/strong>, showing the stability of filled f orbitals.<\/li>\n\n\n\n<li><strong>Actinide contraction in uranium:<\/strong> Removal of electrons favors the more stable 5f\u00b2 (U\u2074\u207a) or empty 5f\u2070 (U\u2076\u207a) state.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Predict the ground-state electron configuration of each ion. Use the abbreviated noble gas notation. Ru2+. W3+ B UX2 The correct answer and explanation is : Electron Configuration of Ions Using Noble Gas Notation To determine the ground-state electron configuration of each ion, we must first write the electron configuration of the neutral atom and then [&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-199045","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/199045","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=199045"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/199045\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=199045"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=199045"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=199045"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}