{"id":195409,"date":"2025-02-28T08:32:35","date_gmt":"2025-02-28T08:32:35","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=195409"},"modified":"2025-02-28T08:32:38","modified_gmt":"2025-02-28T08:32:38","slug":"atom-2","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/02\/28\/atom-2\/","title":{"rendered":"Atom"},"content":{"rendered":"\n<p>Atom<br>Regarding the following nitrogen,<br>7<br>N<br>15<br>D<br>Q. How many protons, neutrons, electrons does the nitrogen atom contain?<br>Protons<br>neutrons<br>electrons<br>Q. How many electrons are there in the first shell, second shell, and the third shell?<br>Lenci<br>the first shell<br>the second shell<br>and the third shell<br>Q. How many valence electrons are there in the nitrogen atom?<\/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<h3 class=\"wp-block-heading\"><strong>Protons, Neutrons, and Electrons in Nitrogen-15 (\u00b9\u2075N)<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Protons<\/strong>: 7<\/li>\n\n\n\n<li><strong>Neutrons<\/strong>: 8<\/li>\n\n\n\n<li><strong>Electrons<\/strong>: 7<\/li>\n<\/ul>\n\n\n\n<p>The nitrogen atom (symbol: <strong>N<\/strong>) has an atomic number of <strong>7<\/strong>, which means it contains <strong>7 protons<\/strong> in its nucleus. The given isotope is <strong>Nitrogen-15<\/strong>, meaning its mass number is <strong>15<\/strong>. The mass number is the sum of protons and neutrons, so to find the number of neutrons:<br><strong>Neutrons = Mass Number &#8211; Protons = 15 &#8211; 7 = 8<\/strong>.<\/p>\n\n\n\n<p>Since nitrogen is a neutral atom, the number of <strong>electrons equals the number of protons<\/strong>, meaning nitrogen has <strong>7 electrons<\/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>Electron Distribution in Shells<\/strong><\/h3>\n\n\n\n<p>Electrons in an atom are arranged in <strong>shells<\/strong> (energy levels) following the <strong>2n\u00b2 rule<\/strong>:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>First Shell (K-shell)<\/strong>: Holds a maximum of <strong>2 electrons<\/strong>.<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nitrogen has <strong>2 electrons<\/strong> in this shell.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Second Shell (L-shell)<\/strong>: Holds a maximum of <strong>8 electrons<\/strong>.<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nitrogen has <strong>5 electrons<\/strong> in this shell.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Third Shell (M-shell)<\/strong>: Holds a maximum of <strong>18 electrons<\/strong>, but since nitrogen has only <strong>7 total electrons<\/strong>, the third shell is empty (<strong>0 electrons<\/strong>).<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Valence Electrons in Nitrogen Atom<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Valence electrons<\/strong> are the electrons present in the <strong>outermost shell<\/strong> of an atom.<\/li>\n\n\n\n<li>For nitrogen, the outermost shell is the <strong>second shell<\/strong>, which contains <strong>5 electrons<\/strong>.<\/li>\n\n\n\n<li>This means <strong>nitrogen has 5 valence electrons<\/strong>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Explanation (300 Words)<\/strong><\/h3>\n\n\n\n<p>Nitrogen is an essential element in chemistry and biology, commonly found in the atmosphere and organic compounds. The nitrogen atom is represented by the symbol <strong>N<\/strong>, with an atomic number of <strong>7<\/strong>. This means it has <strong>7 protons<\/strong> in its nucleus and, in the case of the <strong>Nitrogen-15<\/strong> isotope, <strong>8 neutrons<\/strong>.<\/p>\n\n\n\n<p>The number of electrons in a neutral nitrogen atom is also <strong>7<\/strong>, ensuring an overall charge balance. These electrons are distributed in different shells according to the <strong>2n\u00b2 rule<\/strong>. The first shell (<strong>K-shell<\/strong>) holds a maximum of <strong>2 electrons<\/strong>, and the second shell (<strong>L-shell<\/strong>) holds the remaining <strong>5 electrons<\/strong>, as nitrogen only has <strong>7 electrons<\/strong> in total. The third shell (<strong>M-shell<\/strong>) remains empty.<\/p>\n\n\n\n<p>The <strong>valence electrons<\/strong>, or the electrons in the outermost shell, determine an element\u2019s chemical reactivity. Nitrogen has <strong>5 valence electrons<\/strong>, making it three electrons short of a stable <strong>octet<\/strong> (8 electrons). This property allows nitrogen to form bonds with other elements, such as hydrogen in ammonia (<strong>NH\u2083<\/strong>) or oxygen in nitrogen oxides.<\/p>\n\n\n\n<p>Nitrogen\u2019s ability to form <strong>triple bonds<\/strong> (as seen in nitrogen gas, <strong>N\u2082<\/strong>) makes it a crucial element in biological molecules like proteins and DNA. Its valency of <strong>3<\/strong> allows it to form <strong>stable covalent bonds<\/strong>, making it essential in various chemical and industrial processes, including fertilizers and explosives.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>Now, I&#8217;ll generate an image representing the nitrogen atom and its structure.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/02\/image-1625.png\" alt=\"\" class=\"wp-image-195410\"\/><\/figure>\n\n\n\n<p>Here is an educational diagram of a nitrogen atom (N-15), illustrating its protons, neutrons, and electron arrangement. Let me know if you need any modifications or additional details!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>AtomRegarding the following nitrogen,7N15DQ. How many protons, neutrons, electrons does the nitrogen atom contain?ProtonsneutronselectronsQ. How many electrons are there in the first shell, second shell, and the third shell?Lencithe first shellthe second shelland the third shellQ. How many valence electrons are there in the nitrogen atom? The Correct Answer and Explanation is : Protons, Neutrons, [&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-195409","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/195409","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=195409"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/195409\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=195409"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=195409"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=195409"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}