{"id":149844,"date":"2024-10-07T20:10:47","date_gmt":"2024-10-07T20:10:47","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=149844"},"modified":"2024-10-07T20:10:49","modified_gmt":"2024-10-07T20:10:49","slug":"write-a-chemical-formula","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2024\/10\/07\/write-a-chemical-formula\/","title":{"rendered":"Write a chemical formula"},"content":{"rendered":"\n<p>Write a chemical formula. . . Ca2+ and S2-<\/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 chemical formula formed by calcium ions (Ca\u00b2\u207a) and sulfide ions (S\u00b2\u207b) is <strong>CaS<\/strong>. This formula represents calcium sulfide, a compound formed by the combination of calcium and sulfur.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Ionic Bonding<\/strong>: Calcium (Ca) is a metal in Group 2 of the periodic table, meaning it has two electrons in its outermost shell. To achieve a stable electron configuration, calcium tends to lose these two electrons, resulting in a positively charged ion, Ca\u00b2\u207a. On the other hand, sulfur (S) is a non-metal in Group 16, with six electrons in its outer shell. Sulfur needs two additional electrons to complete its octet and achieve stability. Therefore, it gains two electrons, forming a negatively charged ion, S\u00b2\u207b.<\/li>\n\n\n\n<li><strong>Charge Balance<\/strong>: The charges of the ions are critical for determining the formula of the resulting compound. In this case, the Ca\u00b2\u207a ion has a charge of +2, while the S\u00b2\u207b ion has a charge of -2. The charges balance each other out: +2 from calcium and -2 from sulfur. This neutral charge indicates that one calcium ion will pair with one sulfide ion to form a neutral compound.<\/li>\n\n\n\n<li><strong>Chemical Formula Representation<\/strong>: The formula CaS is indicative of a 1:1 ratio of calcium ions to sulfide ions in the compound. It shows that for every calcium ion, there is one sulfide ion, resulting in a stable ionic compound.<\/li>\n\n\n\n<li><strong>Properties of Calcium Sulfide<\/strong>: Calcium sulfide is a white or yellowish solid that can react with water to produce hydrogen sulfide gas, a compound known for its characteristic rotten egg smell. It is also used in various applications, including phosphorescent materials, fertilizers, and in the production of sulfur-containing compounds.<\/li>\n<\/ol>\n\n\n\n<p>In summary, the correct chemical formula for the combination of Ca\u00b2\u207a and S\u00b2\u207b ions is <strong>CaS<\/strong>, representing calcium sulfide, an ionic compound formed by the transfer of electrons from calcium to sulfur.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Write a chemical formula. . . Ca2+ and S2- The Correct answer and Explanation is : The chemical formula formed by calcium ions (Ca\u00b2\u207a) and sulfide ions (S\u00b2\u207b) is CaS. This formula represents calcium sulfide, a compound formed by the combination of calcium and sulfur. Explanation: In summary, the correct chemical formula for the combination [&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-149844","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/149844","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=149844"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/149844\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=149844"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=149844"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=149844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}