{"id":212109,"date":"2025-05-05T17:08:34","date_gmt":"2025-05-05T17:08:34","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=212109"},"modified":"2025-05-05T17:08:36","modified_gmt":"2025-05-05T17:08:36","slug":"how-many-electrons-will-chlorine-gain-or-lose-when-it-forma-an-ion","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/05\/how-many-electrons-will-chlorine-gain-or-lose-when-it-forma-an-ion\/","title":{"rendered":"How many electrons will chlorine gain or lose when it forma an ion"},"content":{"rendered":"\n<p>How many electrons will chlorine gain or lose when it forma an ion?<br>A) lose 1 <\/p>\n\n\n\n<p>B) gain 1 <\/p>\n\n\n\n<p>C) lose 7 <\/p>\n\n\n\n<p>Dj gain 2 B) lose 3<\/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 <strong>B) gain 1<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>Chlorine is a halogen, with the atomic number 17. This means that a neutral chlorine atom has 17 electrons, and the electron configuration of chlorine is:<\/p>\n\n\n\n<p>$\\text{Cl}: 1s^2 \\, 2s^2 \\, 2p^6 \\, 3s^2 \\, 3p^5$<\/p>\n\n\n\n<p>This means chlorine has 7 electrons in its outermost (third) energy level (3s^2 3p^5), which is one electron short of having a full octet of 8 electrons in that outermost shell. For chlorine to achieve the stable electron configuration of a noble gas (like argon), it needs to gain one electron.<\/p>\n\n\n\n<p>When chlorine gains this electron, it becomes a negatively charged ion, called a <strong>chloride ion<\/strong> ($Cl^-$). The addition of this extra electron gives chlorine a total of 18 electrons (which is the same number as the noble gas argon), making it stable. The chloride ion has a charge of <strong>-1<\/strong>, indicating that it has one more electron than protons.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Why chlorine gains an electron:<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Electron configuration<\/strong>: Chlorine has 7 electrons in its outer shell and needs 1 more to complete its octet (8 electrons).<\/li>\n\n\n\n<li><strong>Stability<\/strong>: By gaining an electron, chlorine achieves a full outer shell, making it more stable and energetically favorable.<\/li>\n\n\n\n<li><strong>Ion formation<\/strong>: Since gaining an electron gives chlorine a negative charge, it becomes a chloride ion ($Cl^-$) with a charge of -1.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Why chlorine does not lose electrons:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Losing electrons would result in a positive charge. However, for chlorine to achieve stability, it would need to lose 7 electrons, which would leave it with just 10 electrons, making it highly unstable. Therefore, losing electrons is not energetically favorable for chlorine.<\/li>\n<\/ul>\n\n\n\n<p>Thus, chlorine will <strong>gain 1 electron<\/strong> to form a chloride ion, making option <strong>B<\/strong> the correct answer.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>How many electrons will chlorine gain or lose when it forma an ion?A) lose 1 B) gain 1 C) lose 7 Dj gain 2 B) lose 3 The correct answer and explanation is : The correct answer is B) gain 1. Explanation: Chlorine is a halogen, with the atomic number 17. This means that a [&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-212109","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/212109","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=212109"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/212109\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=212109"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=212109"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=212109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}