{"id":244412,"date":"2025-07-05T06:10:25","date_gmt":"2025-07-05T06:10:25","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=244412"},"modified":"2025-07-05T06:10:27","modified_gmt":"2025-07-05T06:10:27","slug":"argon-has-an-atomic-number-of-18","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/05\/argon-has-an-atomic-number-of-18\/","title":{"rendered":"Argon has an atomic number of 18."},"content":{"rendered":"\n<p>Argon has an atomic number of 18. How many protons are in an atom of argon? A.) 17 B.) 18 C.) 35 D.) 52<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>The correct answer is <strong>B) 18<\/strong>.<\/p>\n\n\n\n<p>Explanation:<br>In an atom, the number of <strong>protons<\/strong> is equal to the <strong>atomic number<\/strong>. The atomic number represents the number of protons in the nucleus of an atom.<\/p>\n\n\n\n<p>For argon (Ar), its atomic number is 18. This means that each atom of argon has <strong>18 protons<\/strong> in its nucleus.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Protons<\/strong> are positively charged particles located in the nucleus of an atom. They are one of the three primary subatomic particles, along with <strong>neutrons<\/strong> (which have no charge) and <strong>electrons<\/strong> (which are negatively charged).<\/li>\n\n\n\n<li>The <strong>atomic number<\/strong> of an element is unique to each element and determines the identity of the element. For example, any atom with 18 protons is an atom of <strong>argon<\/strong>.<\/li>\n\n\n\n<li>The atomic number also helps determine the <strong>element&#8217;s position in the periodic table<\/strong>. Argon is a noble gas, and its position as an inert gas is due to its stable electron configuration, with a full outer electron shell (a characteristic of noble gases).<\/li>\n<\/ul>\n\n\n\n<p>In summary, since argon&#8217;s atomic number is 18, this directly indicates that an argon atom contains 18 protons.<\/p>\n\n\n\n<p>\\<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/07\/learnexams-banner5-450.jpeg\" alt=\"\" class=\"wp-image-244413\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Argon has an atomic number of 18. How many protons are in an atom of argon? A.) 17 B.) 18 C.) 35 D.) 52 The Correct Answer and Explanation is: The correct answer is B) 18. Explanation:In an atom, the number of protons is equal to the atomic number. The atomic number represents the number [&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-244412","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/244412","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=244412"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/244412\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=244412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=244412"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=244412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}