{"id":272027,"date":"2025-07-26T09:17:33","date_gmt":"2025-07-26T09:17:33","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=272027"},"modified":"2025-07-26T09:17:35","modified_gmt":"2025-07-26T09:17:35","slug":"a-scientist-discovers-a-new-element-on-mars","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/26\/a-scientist-discovers-a-new-element-on-mars\/","title":{"rendered":"A scientist discovers a new element on Mars"},"content":{"rendered":"\n<p>A scientist discovers a new element on Mars. It has 843 protons, 843 electrons and 992 neutroms. What would be the atomic mass of the new element?<br>18355<br>9922<br>1499<br>116866<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\">The correct answer and explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>The atomic mass of an element is calculated by adding the number of protons and neutrons in the nucleus, since protons and neutrons contribute most of the atom&#8217;s mass. In this case, the element discovered on Mars has 843 protons and 992 neutrons.<\/p>\n\n\n\n<p>To calculate the atomic mass:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Number of protons = 843<\/li>\n\n\n\n<li>Number of neutrons = 992<\/li>\n\n\n\n<li>The number of electrons is not used in calculating the atomic mass, as electrons are much lighter than protons or neutrons.<\/li>\n<\/ul>\n\n\n\n<p>Thus, the atomic mass is:<br>Atomic&nbsp;mass=Number&nbsp;of&nbsp;protons+Number&nbsp;of&nbsp;neutrons=843+992=1835\\text{Atomic mass} = \\text{Number of protons} + \\text{Number of neutrons} = 843 + 992 = 1835<\/p>\n\n\n\n<p>The atomic mass of the new element is <strong>1835<\/strong>. However, none of the provided answers are correct, as the expected value should be <strong>1835<\/strong>, which matches the correct sum of protons and neutrons.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Key Points:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Atomic mass is the sum of protons and neutrons in the nucleus.<\/li>\n\n\n\n<li>Electrons do not significantly affect the atomic mass because they are so much lighter than protons and neutrons.<\/li>\n\n\n\n<li>The calculation for the new element&#8217;s atomic mass was straightforward once the number of protons and neutrons was known.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>A scientist discovers a new element on Mars. It has 843 protons, 843 electrons and 992 neutroms. What would be the atomic mass of the new element?1835599221499116866 The correct answer and explanation is: The atomic mass of an element is calculated by adding the number of protons and neutrons in the nucleus, since protons and [&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-272027","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/272027","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=272027"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/272027\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=272027"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=272027"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=272027"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}