{"id":184491,"date":"2025-01-21T05:47:18","date_gmt":"2025-01-21T05:47:18","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=184491"},"modified":"2025-01-21T05:47:20","modified_gmt":"2025-01-21T05:47:20","slug":"draw-the-lewis-structure-for-h2o-ch4-methane-and-for-nh3","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/01\/21\/draw-the-lewis-structure-for-h2o-ch4-methane-and-for-nh3\/","title":{"rendered":"Draw the Lewis structure for H2O, CH4 (methane), and for NH3"},"content":{"rendered":"\n<ol class=\"wp-block-list\">\n<li>Draw the Lewis structure for H2O, CH4 (methane), and for NH3.<\/li>\n\n\n\n<li>Write the Lewis structure of the following molecules:<\/li>\n<\/ol>\n\n\n\n<p>a. Ethylene, C2H4<\/p>\n\n\n\n<p>b. Acetylene, C2H2<\/p>\n\n\n\n<p>c. Carbon tetrachloride, CCl4<\/p>\n\n\n\n<p>d. COBr2 (for the skeletal structure, C is bonded to O and Br atoms)<\/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<p>Here are the Lewis structures for the given molecules, followed by a detailed explanation:<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>Lewis Structures<\/strong><\/h3>\n\n\n\n<p><strong>a. Water (H\u2082O):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Central atom: Oxygen.<\/li>\n\n\n\n<li>Each hydrogen atom forms a single bond with oxygen.<\/li>\n\n\n\n<li>Oxygen has two lone pairs of electrons.<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>   H\n   |\nH\u2014O\n   |\n   H<\/code><\/pre>\n\n\n\n<p><strong>b. Methane (CH\u2084):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Central atom: Carbon.<\/li>\n\n\n\n<li>Carbon forms single bonds with four hydrogen atoms.<\/li>\n\n\n\n<li>Carbon has no lone pairs.<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>    H\n    |\nH\u2014C\u2014H\n    |\n    H<\/code><\/pre>\n\n\n\n<p><strong>c. Ammonia (NH\u2083):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Central atom: Nitrogen.<\/li>\n\n\n\n<li>Nitrogen forms three single bonds with hydrogen atoms.<\/li>\n\n\n\n<li>Nitrogen has one lone pair of electrons.<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>    H\n    |\nH\u2014N\u2014H\n    ..<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong>Lewis Structures<\/strong><\/h3>\n\n\n\n<p><strong>a. Ethylene (C\u2082H\u2084):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Each carbon atom forms a double bond with the other carbon and single bonds with two hydrogen atoms.<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>H   H\n \\ \/\n  C=C\n \/ \\\nH   H<\/code><\/pre>\n\n\n\n<p><strong>b. Acetylene (C\u2082H\u2082):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Carbon atoms are triple-bonded to each other, with each carbon forming a single bond to one hydrogen atom.<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>H-C\u2261C-H<\/code><\/pre>\n\n\n\n<p><strong>c. Carbon tetrachloride (CCl\u2084):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Carbon forms single bonds with four chlorine atoms, each chlorine atom has three lone pairs.<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>   Cl\n   |\nCl-C-Cl\n   |\n   Cl<\/code><\/pre>\n\n\n\n<p><strong>d. COBr\u2082:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Carbon is bonded to oxygen (double bond) and two bromine atoms (single bonds). Oxygen has two lone pairs, and bromine atoms each have three lone pairs.<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>   Br\n   |\nO=C\n   |\n   Br<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation (Approx. 300 Words)<\/h3>\n\n\n\n<p>The Lewis structure illustrates the arrangement of atoms, bonds, and lone pairs in a molecule. Electrons are shown as dots, while bonds are depicted as lines. Here&#8217;s a breakdown of the reasoning:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Octet Rule<\/strong>: Atoms aim to complete their octet (8 valence electrons), except hydrogen, which requires only 2 electrons.<\/li>\n\n\n\n<li><strong>Steps to Draw a Lewis Structure<\/strong>:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Count total valence electrons for all atoms.<\/li>\n\n\n\n<li>Arrange atoms with the least electronegative atom (except hydrogen) in the center.<\/li>\n\n\n\n<li>Form single bonds, then add double\/triple bonds as needed.<\/li>\n\n\n\n<li>Distribute lone pairs to satisfy the octet rule.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Key Insights<\/strong>:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Water (H\u2082O)<\/strong>: Oxygen has 6 valence electrons, shares 2 electrons with hydrogens, and retains 2 lone pairs.<\/li>\n\n\n\n<li><strong>Methane (CH\u2084)<\/strong>: Carbon shares its 4 valence electrons equally with hydrogen atoms.<\/li>\n\n\n\n<li><strong>Ammonia (NH\u2083)<\/strong>: Nitrogen shares 3 electrons with hydrogens, leaving 1 lone pair.<\/li>\n\n\n\n<li><strong>Ethylene (C\u2082H\u2084)<\/strong>: A double bond between carbons satisfies their octets while hydrogens form single bonds.<\/li>\n\n\n\n<li><strong>Acetylene (C\u2082H\u2082)<\/strong>: A triple bond between carbons ensures octet fulfillment; each carbon also bonds to one hydrogen.<\/li>\n\n\n\n<li><strong>Carbon tetrachloride (CCl\u2084)<\/strong>: Carbon forms single bonds with four chlorine atoms, completing all octets.<\/li>\n\n\n\n<li><strong>COBr\u2082<\/strong>: The skeletal structure places oxygen (double bond) and bromine (single bonds) around carbon, adhering to the octet rule.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>a. Ethylene, C2H4 b. Acetylene, C2H2 c. Carbon tetrachloride, CCl4 d. COBr2 (for the skeletal structure, C is bonded to O and Br atoms) The Correct Answer and Explanation is : Here are the Lewis structures for the given molecules, followed by a detailed explanation: 1. Lewis Structures a. Water (H\u2082O): b. Methane (CH\u2084): c. [&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-184491","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/184491","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=184491"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/184491\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=184491"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=184491"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=184491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}