{"id":221664,"date":"2025-05-29T21:43:18","date_gmt":"2025-05-29T21:43:18","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=221664"},"modified":"2025-05-29T21:43:21","modified_gmt":"2025-05-29T21:43:21","slug":"when-forming-an-ion-what-is-the-expected-charge-on-palladium-and-what-is-the-electron-configuration-of-that-ion-8-kr-552-2-kr","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/29\/when-forming-an-ion-what-is-the-expected-charge-on-palladium-and-what-is-the-electron-configuration-of-that-ion-8-kr-552-2-kr\/","title":{"rendered":"When forming an ion, what is the expected charge on palladium and what is the electron configuration of that ion +8, [kr] 552 +2, [Kr]"},"content":{"rendered":"\n<p>When forming an ion, what is the expected charge on palladium and what is the electron configuration of that ion? +8, [kr] 552 +2, [Kr] 4d +10, [kr] +2, [Kr] 552 4d +2, [kr] 552 406<\/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<h3 class=\"wp-block-heading\">Correct Answer:<\/h3>\n\n\n\n<p><strong>+2, [Kr] 4d\u2078<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>Palladium (symbol <strong>Pd<\/strong>, atomic number <strong>46<\/strong>) is a <strong>transition metal<\/strong> in the d-block of the periodic table. To determine the <strong>expected charge<\/strong> and <strong>electron configuration of the ion<\/strong>, we must first look at the <strong>ground-state electron configuration<\/strong> of a neutral palladium atom.<\/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. Ground-State Electron Configuration of Neutral Pd:<\/strong><\/h4>\n\n\n\n<p>Neutral Pd has 46 electrons. Its <strong>actual ground-state electron configuration<\/strong> is:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>[Kr] 4d\u00b9\u2070<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p>This is unusual. Based on the Aufbau principle, one might expect [Kr] 5s\u00b2 4d\u2078, but Pd is an exception due to stability gained from a <strong>fully filled 4d subshell<\/strong> (4d\u00b9\u2070) and an <strong>empty 5s orbital<\/strong>. Hence:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Pd: [Kr] 4d\u00b9\u2070<\/strong><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2. Common Ion Formed by Palladium:<\/strong><\/h4>\n\n\n\n<p>Palladium most commonly forms a <strong>+2 oxidation state<\/strong> in compounds, though it can also form +4. However, +2 is far more stable and prevalent in nature and industrial chemistry (e.g., PdCl\u2082, Pd(NO\u2083)\u2082).<\/p>\n\n\n\n<p>When forming the <strong>+2 ion (Pd\u00b2\u207a)<\/strong>, palladium loses two electrons. Since the 5s orbital is higher in energy and typically ionized first, and it is already empty, the two electrons are removed from the 4d orbital.<\/p>\n\n\n\n<p>So:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Pd\u00b2\u207a: [Kr] 4d\u2078<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p>This is the most <strong>stable and common ionic state<\/strong> for Pd.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3. Incorrect Options Explained:<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>+8 charge<\/strong> is not possible for palladium; it exceeds its typical valence capabilities.<\/li>\n\n\n\n<li><strong>[Kr] 552<\/strong> is a non-existent or miswritten configuration.<\/li>\n\n\n\n<li><strong>[Kr] 552 406<\/strong> is incorrect due to invalid orbital notation and ordering.<\/li>\n\n\n\n<li><strong>[Kr] 4d<\/strong> is incomplete.<\/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\">Final Answer:<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Pd\u00b2\u207a has a charge of +2 and an electron configuration of [Kr] 4d\u2078.<\/strong><\/p>\n<\/blockquote>\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-banner9-83.jpeg\" alt=\"\" class=\"wp-image-221665\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>When forming an ion, what is the expected charge on palladium and what is the electron configuration of that ion? +8, [kr] 552 +2, [Kr] 4d +10, [kr] +2, [Kr] 552 4d +2, [kr] 552 406 The Correct Answer and Explanation is: Correct Answer: +2, [Kr] 4d\u2078 Explanation: Palladium (symbol Pd, atomic number 46) is [&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-221664","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/221664","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=221664"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/221664\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=221664"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=221664"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=221664"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}