Name an element in the fifth period (row) of the periodic table that fits each description:<\/p>\n\n\n\n
a) one valence electron
b) a complete outer shell
c) five 5p electrons<\/p>\n\n\n\n
The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n Here are the correct answers for each description, followed by a detailed explanation:<\/p>\n\n\n\n a) One valence electron:<\/strong> Rubidium (Rb)<\/strong> The periodic table<\/strong> is arranged in periods (horizontal rows) and groups (vertical columns). The fifth period includes elements with electrons filling the fifth electron shell (n = 5)<\/strong>. The types of orbitals involved are 5s, 4d, and 5p.<\/p>\n\n\n\n a) One valence electron \u2014 Rubidium (Rb):<\/strong> b) A complete outer shell \u2014 Xenon (Xe):<\/strong> c) Five 5p electrons \u2014 Antimony (Sb):<\/strong> Name an element in the fifth period (row) of the periodic table that fits each description: a) one valence electronb) a complete outer shellc) five 5p electrons The correct answer and explanation is : Here are the correct answers for each description, followed by a detailed explanation: a) One valence electron: Rubidium (Rb)b) A complete […]<\/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-211066","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/211066","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=211066"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/211066\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=211066"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=211066"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=211066"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
b) A complete outer shell:<\/strong> Xenon (Xe)<\/strong>
c) Five 5p electrons:<\/strong> Antimony (Sb)<\/strong><\/p>\n\n\n\n
\n\n\n\nExplanation (300 words):<\/strong><\/h3>\n\n\n\n
\n\n\n\n
Rubidium, atomic number 37, is in Group 1<\/strong> (alkali metals) and Period 5. Alkali metals have one electron in their outermost shell<\/strong> (valence shell), which for rubidium is the 5s\u00b9 electron. This single valence electron makes rubidium highly reactive, especially with water, and gives it characteristic metallic properties.<\/p>\n\n\n\n
\n\n\n\n
Xenon, atomic number 54, is a noble gas<\/strong> in Group 18 and Period 5. Noble gases have full outer electron shells<\/strong>, making them very stable and chemically inert. Xenon’s electron configuration ends in 5s\u00b2 5p\u2076, completing the octet in the fifth shell. As a result, xenon rarely forms compounds under normal conditions.<\/p>\n\n\n\n
\n\n\n\n
Antimony, atomic number 51, is in Group 15 and Period 5. Its electron configuration is [Kr] 4d\u00b9\u2070 5s\u00b2 5p\u00b3. This means it has three 5p electrons<\/strong>, not five.
However, the element with five 5p electrons<\/strong> is Iodine (I)<\/strong>, atomic number 53, with configuration [Kr] 4d\u00b9\u2070 5s\u00b2 5p\u2075.
So, the correct answer here is Iodine (I)<\/strong>, not Antimony<\/strong>.
Sorry for the earlier mismatch\u2014thank you for catching it.<\/p>\n\n\n\n
\n\n\n\nFinal Correct Answers:<\/strong><\/h3>\n\n\n\n
\n