{"id":265233,"date":"2025-07-21T19:45:36","date_gmt":"2025-07-21T19:45:36","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=265233"},"modified":"2025-07-21T19:45:38","modified_gmt":"2025-07-21T19:45:38","slug":"a-certain-atom-has-26-protons-26-electrons-and-30-neutrons","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/21\/a-certain-atom-has-26-protons-26-electrons-and-30-neutrons\/","title":{"rendered":"A certain atom has 26 protons, 26 electrons, and 30 neutrons"},"content":{"rendered":"\n

A certain atom has 26 protons, 26 electrons, and 30 neutrons. It mass number is?<\/p>\n\n\n\n

The correct answer and explanation is:<\/mark><\/strong><\/p>\n\n\n\n

The mass number of an atom is the sum of the number of protons and neutrons in its nucleus. In this case, the atom has 26 protons and 30 neutrons. Therefore, the mass number is: Mass Number=Protons+Neutrons=26+30=56\\text{Mass Number} = \\text{Protons} + \\text{Neutrons} = 26 + 30 = 56<\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n
    \n
  1. Protons<\/strong>: The number of protons determines the element’s atomic number, which is the defining characteristic of the element. In this case, the atom has 26 protons, which corresponds to iron (Fe) on the periodic table. The atomic number of iron is 26.<\/li>\n\n\n\n
  2. Neutrons<\/strong>: Neutrons are uncharged particles that also reside in the nucleus of an atom. The number of neutrons can vary in different isotopes of the same element. Here, the atom has 30 neutrons, which is one of the isotopes of iron.<\/li>\n\n\n\n
  3. Electrons<\/strong>: The number of electrons in a neutral atom is equal to the number of protons, which ensures that the atom has no net electric charge. In this case, the atom has 26 electrons, matching the 26 protons.<\/li>\n<\/ol>\n\n\n\n

    The mass number<\/strong> is a whole number that represents the total mass of the nucleus. It is typically close to the atomic weight of the element, though the atomic weight often includes the average mass of different isotopes of the element.<\/p>\n\n\n\n

    In this case, the mass number of the atom is 56<\/strong>, which is commonly associated with the isotope of iron known as iron-56 (Fe-56). This isotope is stable and is one of the most abundant forms of iron found in nature.<\/p>\n\n\n\n

    In summary, the mass number is calculated by adding the protons and neutrons. For this atom, the mass number is 56.<\/p>\n","protected":false},"excerpt":{"rendered":"

    A certain atom has 26 protons, 26 electrons, and 30 neutrons. It mass number is? The correct answer and explanation is: The mass number of an atom is the sum of the number of protons and neutrons in its nucleus. In this case, the atom has 26 protons and 30 neutrons. Therefore, the mass number […]<\/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-265233","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/265233","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=265233"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/265233\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=265233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=265233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=265233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}