{"id":246603,"date":"2025-07-07T09:30:28","date_gmt":"2025-07-07T09:30:28","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=246603"},"modified":"2025-07-07T09:30:30","modified_gmt":"2025-07-07T09:30:30","slug":"compound-total-valence-lewis-structure-electron-pair-molecular-approximate-polar","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/07\/compound-total-valence-lewis-structure-electron-pair-molecular-approximate-polar\/","title":{"rendered":"Compound Total Valence Lewis Structure Electron Pair Molecular Approximate Polar"},"content":{"rendered":"\n<p>Compound Total Valence Lewis Structure Electron Pair Molecular Approximate Polar? Electrons Geometry Geometry Bond Angles SO3 24 trigonal trigonal planar planar HCN H-C?N SO2 18 CS2 CH4 8 H H-C-H tetrahedral tetrahedral H<\/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<p>Let&#8217;s break down the molecular structures and their key features for each compound:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>SO3 (Sulfur Trioxide)<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Total Valence Electrons<\/strong>: 24<\/li>\n\n\n\n<li><strong>Electron Pair Geometry<\/strong>: Trigonal<\/li>\n\n\n\n<li><strong>Molecular Geometry<\/strong>: Trigonal Planar<\/li>\n\n\n\n<li><strong>Bond Angles<\/strong>: 120\u00b0<\/li>\n\n\n\n<li><strong>Polarity<\/strong>: Nonpolar<\/li>\n<\/ul>\n\n\n\n<p>SO3 has 24 valence electrons, and in its structure, the central sulfur atom is bonded to three oxygen atoms through double bonds. This leads to a trigonal planar geometry with 120\u00b0 bond angles. Because the molecule has symmetry and no lone pairs on the central sulfur, it is nonpolar.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong>HCN (Hydrogen Cyanide)<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Total Valence Electrons<\/strong>: 10<\/li>\n\n\n\n<li><strong>Electron Pair Geometry<\/strong>: Linear<\/li>\n\n\n\n<li><strong>Molecular Geometry<\/strong>: Linear<\/li>\n\n\n\n<li><strong>Bond Angles<\/strong>: 180\u00b0<\/li>\n\n\n\n<li><strong>Polarity<\/strong>: Polar<\/li>\n<\/ul>\n\n\n\n<p>HCN has 10 valence electrons, with a linear structure. The molecule consists of a hydrogen atom bonded to a carbon atom, which is triple-bonded to a nitrogen atom. This molecule is linear with a bond angle of 180\u00b0. Since the electronegativities of carbon and nitrogen differ, HCN is polar.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. <strong>SO2 (Sulfur Dioxide)<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Total Valence Electrons<\/strong>: 18<\/li>\n\n\n\n<li><strong>Electron Pair Geometry<\/strong>: Trigonal<\/li>\n\n\n\n<li><strong>Molecular Geometry<\/strong>: Bent<\/li>\n\n\n\n<li><strong>Bond Angles<\/strong>: 120\u00b0<\/li>\n\n\n\n<li><strong>Polarity<\/strong>: Polar<\/li>\n<\/ul>\n\n\n\n<p>SO2 has 18 valence electrons and adopts a trigonal electron pair geometry, with a bent molecular geometry due to the lone pair on sulfur. This results in a bond angle of approximately 120\u00b0. SO2 is polar because of its asymmetric structure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. <strong>CS2 (Carbon Disulfide)<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Total Valence Electrons<\/strong>: 16<\/li>\n\n\n\n<li><strong>Electron Pair Geometry<\/strong>: Linear<\/li>\n\n\n\n<li><strong>Molecular Geometry<\/strong>: Linear<\/li>\n\n\n\n<li><strong>Bond Angles<\/strong>: 180\u00b0<\/li>\n\n\n\n<li><strong>Polarity<\/strong>: Nonpolar<\/li>\n<\/ul>\n\n\n\n<p>CS2 has 16 valence electrons, and its structure is linear, with a carbon atom bonded to two sulfur atoms by double bonds. The bond angle is 180\u00b0, and the molecule is nonpolar due to its symmetric linear shape.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. <strong>CH4 (Methane)<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Total Valence Electrons<\/strong>: 8<\/li>\n\n\n\n<li><strong>Electron Pair Geometry<\/strong>: Tetrahedral<\/li>\n\n\n\n<li><strong>Molecular Geometry<\/strong>: Tetrahedral<\/li>\n\n\n\n<li><strong>Bond Angles<\/strong>: 109.5\u00b0<\/li>\n\n\n\n<li><strong>Polarity<\/strong>: Nonpolar<\/li>\n<\/ul>\n\n\n\n<p>CH4 has 8 valence electrons and adopts a tetrahedral electron pair geometry, with four single bonds between carbon and hydrogen atoms. The bond angles are approximately 109.5\u00b0. Methane is nonpolar because of its symmetrical shape.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Summary:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SO3<\/strong>: Nonpolar, trigonal planar (120\u00b0)<\/li>\n\n\n\n<li><strong>HCN<\/strong>: Polar, linear (180\u00b0)<\/li>\n\n\n\n<li><strong>SO2<\/strong>: Polar, bent (120\u00b0)<\/li>\n\n\n\n<li><strong>CS2<\/strong>: Nonpolar, linear (180\u00b0)<\/li>\n\n\n\n<li><strong>CH4<\/strong>: Nonpolar, tetrahedral (109.5\u00b0)<\/li>\n<\/ul>\n\n\n\n<p>These molecules differ in polarity and geometry based on the distribution of electrons and bonding arrangements.<\/p>\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-banner5-897.jpeg\" alt=\"\" class=\"wp-image-246604\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Compound Total Valence Lewis Structure Electron Pair Molecular Approximate Polar? Electrons Geometry Geometry Bond Angles SO3 24 trigonal trigonal planar planar HCN H-C?N SO2 18 CS2 CH4 8 H H-C-H tetrahedral tetrahedral H The Correct Answer and Explanation is: Let&#8217;s break down the molecular structures and their key features for each compound: 1. SO3 (Sulfur [&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-246603","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/246603","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=246603"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/246603\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=246603"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=246603"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=246603"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}