{"id":197305,"date":"2025-03-07T05:01:46","date_gmt":"2025-03-07T05:01:46","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=197305"},"modified":"2025-03-07T05:01:48","modified_gmt":"2025-03-07T05:01:48","slug":"bromine-br-is-atomic-number-35","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/07\/bromine-br-is-atomic-number-35\/","title":{"rendered":"Bromine (Br) is atomic number 35"},"content":{"rendered":"\n<p>Bromine (Br) is atomic number 35. How many protons, neutrons, and electrons in a negative ion of Bromine-79 (Br&#8221; -79)?<\/p>\n\n\n\n<p>A.<br>B. 35p, 44n, 36e<br>C. 35p, 79, 36e<br>D.<br>E 79p, 35, 36e<\/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. 35 protons, 44 neutrons, 36 electrons<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Understanding Bromine-79<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Atomic number of Bromine (Br) = 35<\/strong>, meaning it has <strong>35 protons<\/strong> in its nucleus.<\/li>\n\n\n\n<li><strong>Mass number of Bromine-79 = 79<\/strong>. The mass number is the sum of <strong>protons and neutrons<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Finding the Number of Neutrons:<\/strong><\/h4>\n\n\n\n<p>[<br>\\text{Number of neutrons} = \\text{Mass number} &#8211; \\text{Atomic number}<br>]<br>[<br>79 &#8211; 35 = 44<br>]<br>So, Bromine-79 has <strong>44 neutrons<\/strong>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Finding the Number of Electrons:<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In a <strong>neutral atom<\/strong>, the number of electrons equals the number of protons.<\/li>\n\n\n\n<li>Bromine normally has <strong>35 electrons<\/strong> in its neutral state.<\/li>\n\n\n\n<li>However, the problem states that it is a <strong>negative ion (Br\u207b)<\/strong>. A negative ion means it has <strong>gained an extra electron<\/strong>.<\/li>\n\n\n\n<li>Since Bromine is <strong>Br\u207b (with a charge of -1), it has gained one additional electron<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p>Thus, the total number of electrons in Br\u207b-79 is:<br>[<br>35 + 1 = 36<br>]<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Final Answer:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Protons = 35<\/strong><\/li>\n\n\n\n<li><strong>Neutrons = 44<\/strong><\/li>\n\n\n\n<li><strong>Electrons = 36<\/strong><\/li>\n\n\n\n<li>Correct option: <strong>B. 35p, 44n, 36e<\/strong><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/03\/image-445.png\" alt=\"\" class=\"wp-image-197306\"\/><\/figure>\n\n\n\n<p>Here is an image illustrating the structure of a Bromine-79 negative ion (Br\u207b), showing its protons, neutrons, and electrons. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bromine (Br) is atomic number 35. How many protons, neutrons, and electrons in a negative ion of Bromine-79 (Br&#8221; -79)? A.B. 35p, 44n, 36eC. 35p, 79, 36eD.E 79p, 35, 36e The correct answer and explanation is : The correct answer is: B. 35 protons, 44 neutrons, 36 electrons Explanation: Understanding Bromine-79 Finding the Number of [&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-197305","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/197305","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=197305"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/197305\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=197305"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=197305"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=197305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}