{"id":187264,"date":"2025-02-04T05:16:22","date_gmt":"2025-02-04T05:16:22","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=187264"},"modified":"2025-02-04T05:16:25","modified_gmt":"2025-02-04T05:16:25","slug":"in-which-cases-do-you-expect-deviations-from-the-idealized-bond-angle","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/02\/04\/in-which-cases-do-you-expect-deviations-from-the-idealized-bond-angle\/","title":{"rendered":"In which cases do you expect deviations from the idealized bond angle"},"content":{"rendered":"\n<p>In which cases do you expect deviations from the idealized bond angle? Check all that apply. <\/p>\n\n\n\n<p>CH3Br <\/p>\n\n\n\n<p>PF3 <\/p>\n\n\n\n<p>SBr2 <\/p>\n\n\n\n<p>BC13<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p>Deviations from the idealized bond angle are expected in the following cases:<br>\u2714 <strong>PF\u2083<\/strong><br>\u2714 <strong>SBr\u2082<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>The idealized bond angles depend on the electron geometry, which is determined by the steric number (the sum of bonded atoms and lone pairs around the central atom). However, real bond angles may deviate due to <strong>lone pair repulsions<\/strong>, <strong>differences in electronegativity<\/strong>, and <strong>atomic size effects<\/strong>.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>CH\u2083Br (Methyl Bromide) \u2013 No Significant Deviation<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Molecular Geometry: <strong>Tetrahedral<\/strong><\/li>\n\n\n\n<li>Ideal Bond Angle: <strong>109.5\u00b0<\/strong><\/li>\n\n\n\n<li>CH\u2083Br has four regions of electron density (three C-H bonds and one C-Br bond). The bromine atom is large, but it does not introduce lone pair repulsions that would significantly alter the bond angle.<\/li>\n\n\n\n<li><strong>Minimal deviation is expected.<\/strong><\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>PF\u2083 (Phosphorus Trifluoride) \u2013 Deviation Expected<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Molecular Geometry: <strong>Trigonal Pyramidal<\/strong><\/li>\n\n\n\n<li>Ideal Bond Angle: <strong>~109.5\u00b0 (Tetrahedral Electron Geometry)<\/strong><\/li>\n\n\n\n<li>Phosphorus has one lone pair, which <strong>repels<\/strong> the bonding pairs, pushing them closer together.<\/li>\n\n\n\n<li><strong>The actual bond angle will be smaller than 109.5\u00b0<\/strong> due to lone pair-bond pair repulsion.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>SBr\u2082 (Sulfur Dibromide) \u2013 Deviation Expected<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Molecular Geometry: <strong>Bent (Angular)<\/strong><\/li>\n\n\n\n<li>Ideal Bond Angle: <strong>~109.5\u00b0 (Tetrahedral Electron Geometry)<\/strong><\/li>\n\n\n\n<li>Sulfur has <strong>two lone pairs<\/strong>, which exert strong repulsion on the S-Br bonds.<\/li>\n\n\n\n<li>This <strong>reduces the bond angle<\/strong> significantly below 109.5\u00b0.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>BCl\u2083 (Boron Trichloride) \u2013 No Significant Deviation<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Molecular Geometry: <strong>Trigonal Planar<\/strong><\/li>\n\n\n\n<li>Ideal Bond Angle: <strong>120\u00b0<\/strong><\/li>\n\n\n\n<li>Boron has no lone pairs, and the three chlorine atoms are identical, so there are <strong>no significant repulsions to distort the bond angle<\/strong>.<\/li>\n\n\n\n<li><strong>No deviation is expected.<\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Conclusion:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>PF\u2083 and SBr\u2082<\/strong> show deviations due to lone pair repulsions.<\/li>\n\n\n\n<li><strong>CH\u2083Br and BCl\u2083<\/strong> closely follow their idealized bond angles.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>In which cases do you expect deviations from the idealized bond angle? Check all that apply. CH3Br PF3 SBr2 BC13 The Correct Answer and Explanation is : Answer: Deviations from the idealized bond angle are expected in the following cases:\u2714 PF\u2083\u2714 SBr\u2082 Explanation: The idealized bond angles depend on the electron geometry, which is determined [&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-187264","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/187264","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=187264"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/187264\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=187264"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=187264"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=187264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}