{"id":247176,"date":"2025-07-07T15:07:31","date_gmt":"2025-07-07T15:07:31","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=247176"},"modified":"2025-07-07T15:07:33","modified_gmt":"2025-07-07T15:07:33","slug":"write-the-chemical-formula-of-the-following-compounds","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/07\/write-the-chemical-formula-of-the-following-compounds\/","title":{"rendered":"Write the chemical formula of the following compounds"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Write the chemical formula of the following compounds: Calcium Sulfide<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\">The correct answer and explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The chemical formula for calcium sulfide is <strong>CaS<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">To determine the chemical formula of calcium sulfide, it&#8217;s essential to understand the charges of the ions involved.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Calcium Ion (Ca\u00b2\u207a)<\/strong>: Calcium, being an alkaline earth metal, has two valence electrons, which it readily loses to form a stable cation with a charge of +2. Therefore, the calcium ion is written as Ca\u00b2\u207a.<\/li>\n\n\n\n<li><strong>Sulfide Ion (S\u00b2\u207b)<\/strong>: Sulfur, located in group 16 of the periodic table, has six valence electrons and requires two additional electrons to achieve a full outer shell, which results in the formation of an anion with a charge of -2. This ion is written as S\u00b2\u207b.<\/li>\n\n\n\n<li><strong>Combining the Ions<\/strong>: When calcium and sulfur combine to form calcium sulfide, the total positive charge from the calcium ion must balance the total negative charge from the sulfide ion. Since calcium has a +2 charge and sulfide has a -2 charge, the ratio of calcium ions to sulfide ions is 1:1.<\/li>\n\n\n\n<li><strong>The Formula<\/strong>: With a one-to-one ratio of calcium ions to sulfide ions, the formula of calcium sulfide is <strong>CaS<\/strong>.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">This process of balancing the charges ensures the compound is neutral. Calcium sulfide is an ionic compound, meaning it is formed by the electrostatic attraction between oppositely charged ions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This compound is typically found as a white solid and is often used in the production of phosphors, in chemical syntheses, and in some specialized applications.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Write the chemical formula of the following compounds: Calcium Sulfide The correct answer and explanation is: The chemical formula for calcium sulfide is CaS. Explanation: To determine the chemical formula of calcium sulfide, it&#8217;s essential to understand the charges of the ions involved. This process of balancing the charges ensures the compound is neutral. Calcium [&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-247176","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/247176","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=247176"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/247176\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=247176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=247176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=247176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}