{"id":232756,"date":"2025-06-12T06:58:11","date_gmt":"2025-06-12T06:58:11","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=232756"},"modified":"2025-06-12T06:58:13","modified_gmt":"2025-06-12T06:58:13","slug":"write-the-abbreviated-electron-configurations-of-the-following-elements","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/06\/12\/write-the-abbreviated-electron-configurations-of-the-following-elements\/","title":{"rendered":"‘Write the abbreviated electron configurations of the following elements"},"content":{"rendered":"\n

‘Write the abbreviated electron configurations of the following elements: 6) iridium 7) chlorine 8) nobelium 9) caesium 10) magnesium’<\/p>\n\n\n\n

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

Here are the abbreviated electron configurations for the given elements:<\/p>\n\n\n\n

    \n
  1. Iridium (Ir)<\/strong>: [Xe] 4f\u00b9\u2074 5d\u2077 6s\u00b2<\/li>\n\n\n\n
  2. Chlorine (Cl)<\/strong>: [Ne] 3s\u00b2 3p\u2075<\/li>\n\n\n\n
  3. Nobelium (No)<\/strong>: [Rn] 5f\u00b9\u2074 7s\u00b2<\/li>\n\n\n\n
  4. Caesium (Cs)<\/strong>: [Xe] 6s\u00b9<\/li>\n\n\n\n
  5. Magnesium (Mg)<\/strong>: [Ne] 3s\u00b2<\/li>\n<\/ol>\n\n\n\n
    \n\n\n\n

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

    Electron configurations represent the distribution of electrons among the orbitals of an atom. Abbreviated (or noble gas) electron configurations simplify this process by using the symbol of the nearest noble gas with a lower atomic number, enclosed in brackets, to represent the core electrons. This method highlights the valence electrons, which are most important in chemical reactions.<\/p>\n\n\n\n

    Iridium (Ir), atomic number 77<\/strong>: The nearest noble gas is xenon (Xe), atomic number 54. After xenon, 14 electrons fill the 4f orbitals, 9 fill the 5d and 6s orbitals. Iridium has a partially filled 5d orbital, with the configuration [Xe] 4f\u00b9\u2074 5d\u2077 6s\u00b2, consistent with transition metal behavior.<\/p>\n\n\n\n

    Chlorine (Cl), atomic number 17<\/strong>: Neon (Ne) is the nearest noble gas. After neon, seven more electrons fill the 3s and 3p orbitals. Chlorine\u2019s configuration [Ne] 3s\u00b2 3p\u2075 shows seven valence electrons, making it one electron short of a full octet, explaining its high reactivity.<\/p>\n\n\n\n

    Nobelium (No), atomic number 102<\/strong>: With radon (Rn) as the previous noble gas, the next 14 electrons occupy the 5f orbitals, completing them. The configuration [Rn] 5f\u00b9\u2074 7s\u00b2 indicates Nobelium\u2019s placement in the actinide series with a full 5f subshell.<\/p>\n\n\n\n

    Caesium (Cs), atomic number 55<\/strong>: After xenon, one electron enters the 6s orbital. Its configuration [Xe] 6s\u00b9 indicates a single valence electron, making caesium highly reactive and typical of alkali metals.<\/p>\n\n\n\n

    Magnesium (Mg), atomic number 12<\/strong>: Neon precedes it. Two additional electrons occupy the 3s orbital. The configuration [Ne] 3s\u00b2 shows a full s orbital, explaining its relatively low reactivity among alkaline earth metals.<\/p>\n\n\n\n

    \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

    ‘Write the abbreviated electron configurations of the following elements: 6) iridium 7) chlorine 8) nobelium 9) caesium 10) magnesium’ The Correct Answer and Explanation is: Here are the abbreviated electron configurations for the given elements: Explanation: Electron configurations represent the distribution of electrons among the orbitals of an atom. Abbreviated (or noble gas) electron configurations […]<\/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-232756","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/232756","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=232756"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/232756\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=232756"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=232756"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=232756"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}