{"id":249808,"date":"2025-07-09T21:43:18","date_gmt":"2025-07-09T21:43:18","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=249808"},"modified":"2025-07-09T21:43:21","modified_gmt":"2025-07-09T21:43:21","slug":"enter-the-full-electron-configuration-for-p3","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/09\/enter-the-full-electron-configuration-for-p3\/","title":{"rendered":"Enter the full electron configuration for P3-"},"content":{"rendered":"\n<p>Enter the full electron configuration for P3-. (2) What is the atomic symbol for the noble gas that also has this electron configuration?<\/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\">Full Electron Configuration for P3-:<\/h3>\n\n\n\n<p>The P3- ion is formed when a phosphorus atom gains three electrons, making it negatively charged. A neutral phosphorus atom has an atomic number of 15, so it has 15 electrons. The electron configuration for neutral phosphorus is:<\/p>\n\n\n\n<p><strong>1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u00b3<\/strong><\/p>\n\n\n\n<p>When phosphorus gains three electrons to form the P3- ion, it will have a total of 18 electrons. To reflect this addition, we update the electron configuration:<\/p>\n\n\n\n<p><strong>1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076<\/strong><\/p>\n\n\n\n<p>This is the electron configuration for the P3- ion, which is the same as the electron configuration of argon (Ar), a noble gas.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Atomic Symbol for the Noble Gas:<\/h3>\n\n\n\n<p>The atomic symbol for the noble gas that has the same electron configuration as the P3- ion is <strong>argon (Ar)<\/strong>. Argon has an atomic number of 18, and its electron configuration is:<\/p>\n\n\n\n<p><strong>1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076<\/strong><\/p>\n\n\n\n<p>Since both P3- and Ar have the same electron configuration, they are considered isoelectronic, meaning they contain the same number of electrons and therefore exhibit similar chemical properties.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The electron configuration is the arrangement of electrons in an atom or ion&#8217;s orbitals.<\/li>\n\n\n\n<li>Phosphorus (P) typically has the electron configuration <strong>1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u00b3<\/strong>, with 15 electrons in total.<\/li>\n\n\n\n<li>When phosphorus gains 3 electrons, it becomes the P3- ion, which now has 18 electrons, and the configuration becomes <strong>1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076<\/strong>.<\/li>\n\n\n\n<li>This electron configuration is identical to that of argon, a noble gas. Noble gases have full outer electron shells, which makes them chemically stable.<\/li>\n\n\n\n<li>The term &#8220;isoelectronic&#8221; describes ions or atoms that have the same number of electrons, and thus similar electron configurations.<\/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\/07\/learnexams-banner6-58.jpeg\" alt=\"\" class=\"wp-image-249809\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Enter the full electron configuration for P3-. (2) What is the atomic symbol for the noble gas that also has this electron configuration? The Correct Answer and Explanation is: Full Electron Configuration for P3-: The P3- ion is formed when a phosphorus atom gains three electrons, making it negatively charged. A neutral phosphorus atom has [&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-249808","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/249808","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=249808"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/249808\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=249808"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=249808"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=249808"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}