{"id":199216,"date":"2025-03-10T20:25:52","date_gmt":"2025-03-10T20:25:52","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=199216"},"modified":"2025-03-10T20:25:54","modified_gmt":"2025-03-10T20:25:54","slug":"na2s-is-named","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/10\/na2s-is-named\/","title":{"rendered":"Na2S is named"},"content":{"rendered":"\n<p>Na2S is named<\/p>\n\n\n\n<p>A) sodium disulfide.<br>B) sodium sulfide.<br>C) sodium(lII) sulfide.<br>D) sodium sulfur.<\/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>The correct answer is:<\/p>\n\n\n\n<p><strong>B) sodium sulfide.<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>Sodium sulfide (<strong>Na\u2082S<\/strong>) is an <strong>ionic compound<\/strong> composed of <strong>sodium (Na)<\/strong> and <strong>sulfur (S)<\/strong>. To determine its correct name, let\u2019s analyze its chemical composition and the systematic naming rules.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 1: Identifying the Elements<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sodium (Na):<\/strong> Sodium is an <strong>alkali metal<\/strong> in Group 1 of the periodic table. It forms a <strong>+1 charge<\/strong> as a cation (<strong>Na\u207a<\/strong>).<\/li>\n\n\n\n<li><strong>Sulfur (S):<\/strong> Sulfur is a <strong>non-metal<\/strong> in Group 16 (chalcogens) and commonly forms a <strong>-2 charge<\/strong> as an anion (<strong>S\u00b2\u207b<\/strong>).<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 2: Balancing the Charges<\/strong><\/h4>\n\n\n\n<p>Since sodium has a <strong>+1 charge<\/strong> and sulfur has a <strong>-2 charge<\/strong>, two sodium ions (<strong>2 \u00d7 Na\u207a<\/strong>) are required to balance one sulfide ion (<strong>S\u00b2\u207b<\/strong>), forming <strong>Na\u2082S<\/strong>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 3: Naming the Compound<\/strong><\/h4>\n\n\n\n<p>According to <strong>IUPAC nomenclature<\/strong> for binary ionic compounds:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>The <strong>cation (metal)<\/strong> is named <strong>first<\/strong> using its <strong>elemental name<\/strong> \u2192 <strong>Sodium<\/strong>.<\/li>\n\n\n\n<li>The <strong>anion (non-metal)<\/strong> is named <strong>second<\/strong> with an <strong>\u201c-ide\u201d<\/strong> suffix \u2192 <strong>Sulfide<\/strong>.<\/li>\n<\/ol>\n\n\n\n<p>Thus, <strong>Na\u2082S is named &#8220;sodium sulfide&#8221;.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Why the Other Choices Are Incorrect?<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A) Sodium disulfide<\/strong> \u2192 Incorrect because \u201cdisulfide\u201d (<strong>S\u2082\u00b2\u207b<\/strong>) refers to a different polyatomic ion (S\u2082\u00b2\u207b), not the simple sulfide ion (S\u00b2\u207b).<\/li>\n\n\n\n<li><strong>C) Sodium(III) sulfide<\/strong> \u2192 Incorrect because sodium only forms <strong>a +1 charge<\/strong>, so no Roman numeral is needed.<\/li>\n\n\n\n<li><strong>D) Sodium sulfur<\/strong> \u2192 Incorrect because ionic compounds do not use element names directly without proper suffixes.<\/li>\n<\/ul>\n\n\n\n<p>Thus, <strong>sodium sulfide (Na\u2082S) is the correct name.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Na2S is named A) sodium disulfide.B) sodium sulfide.C) sodium(lII) sulfide.D) sodium sulfur. The correct answer and explanation is : The correct answer is: B) sodium sulfide. Explanation: Sodium sulfide (Na\u2082S) is an ionic compound composed of sodium (Na) and sulfur (S). To determine its correct name, let\u2019s analyze its chemical composition and the systematic naming [&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-199216","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/199216","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=199216"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/199216\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=199216"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=199216"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=199216"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}