{"id":233998,"date":"2025-06-13T16:36:49","date_gmt":"2025-06-13T16:36:49","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=233998"},"modified":"2025-06-13T16:37:00","modified_gmt":"2025-06-13T16:37:00","slug":"give-the-ground-state-electron-configuration-for-se-2","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/06\/13\/give-the-ground-state-electron-configuration-for-se-2\/","title":{"rendered":"Give the ground state electron configuration for Se."},"content":{"rendered":"\n

Give the ground state electron configuration for Se. A) [Ar]4s23d104p4 B) [Ar]4s24d104p4 C) [Ar]4s23d104p6 D) [Ar]4s23d10 E) [Ar]3d104p4<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

Expand to view model thoughtschevron_righteditmore_vert<\/p>\n\n\n\n

Correct Answer<\/h3>\n\n\n\n

A) [Ar]4s\u00b23d\u00b9\u20704p\u2074<\/strong><\/p>\n\n\n\n

Explanation<\/h3>\n\n\n\n

To determine the ground state electron configuration for an element, we follow a set of rules, primarily the Aufbau principle, which dictates that electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels. The electron configuration describes the distribution of an atom’s electrons in these atomic orbitals.<\/p>\n\n\n\n

    \n
  1. Identify the Element and Atomic Number:<\/strong>\u00a0First, locate Selenium (Se) on the periodic table. Selenium is in Group 16 and Period 4. Its atomic number (Z) is 34. In a neutral atom, the number of electrons is equal to the atomic number, so a neutral Se atom has 34 electrons.<\/li>\n\n\n\n
  2. Use the Noble Gas Abbreviation:<\/strong>\u00a0To simplify the configuration, we can use the noble gas that precedes the element in the periodic table. For Selenium (in Period 4), the preceding noble gas is Argon (Ar), which is at the end of Period 3. Argon has an atomic number of 18, so its configuration ([Ar]) represents the first 18 electrons (1s\u00b22s\u00b22p\u20763s\u00b23p\u2076). This accounts for the core electrons.<\/li>\n\n\n\n
  3. Place the Remaining Electrons:<\/strong>\u00a0We need to place the remaining 34 – 18 = 16 electrons into orbitals according to the Aufbau principle. The filling order after the 3p subshell (the last filled subshell in Argon) is 4s, then 3d, then 4p.\n
      \n
    • The\u00a04s subshell<\/strong>\u00a0is filled next. It can hold a maximum of 2 electrons, giving us\u00a04s\u00b2<\/strong>. We have now accounted for 18 + 2 = 20 electrons.<\/li>\n\n\n\n
    • Following the 4s subshell, the\u00a03d subshell<\/strong>\u00a0is filled. It can hold a maximum of 10 electrons, resulting in\u00a03d\u00b9\u2070<\/strong>. We have now placed 20 + 10 = 30 electrons.<\/li>\n\n\n\n
    • Finally, the remaining 34 – 30 = 4 electrons are placed in the\u00a04p subshell<\/strong>. This gives us\u00a04p\u2074<\/strong>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • Combine the Parts:<\/strong>\u00a0By combining the noble gas core with the configuration of the remaining electrons, we get the complete ground state electron configuration for Selenium:[Ar]4s\u00b23d\u00b9\u20704p\u2074<\/strong><\/li>\n<\/ol>\n\n\n\n
      \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

      Give the ground state electron configuration for Se. A) [Ar]4s23d104p4 B) [Ar]4s24d104p4 C) [Ar]4s23d104p6 D) [Ar]4s23d10 E) [Ar]3d104p4 The Correct Answer and Explanation is: Expand to view model thoughtschevron_righteditmore_vert Correct Answer A) [Ar]4s\u00b23d\u00b9\u20704p\u2074 Explanation To determine the ground state electron configuration for an element, we follow a set of rules, primarily the Aufbau principle, which […]<\/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-233998","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/233998","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=233998"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/233998\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=233998"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=233998"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=233998"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}