{"id":167758,"date":"2024-11-16T07:09:36","date_gmt":"2024-11-16T07:09:36","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=167758"},"modified":"2024-11-16T07:09:39","modified_gmt":"2024-11-16T07:09:39","slug":"which-of-the-following-elements-form-1-ions","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2024\/11\/16\/which-of-the-following-elements-form-1-ions\/","title":{"rendered":"Which of the following elements form +1 ions"},"content":{"rendered":"\n<p>Which of the following elements form +1 ions?<br>A sodium, magnesium, aluminum<br>B strontium, magnesium, calcium<br>C lithium, sodium, potassium<\/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 correct answer is <strong>C: lithium, sodium, potassium<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>To understand why lithium (Li), sodium (Na), and potassium (K) form +1 ions, we need to look at their atomic structures and the general behavior of alkali metals in ion formation.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Ion Formation and Electron Configuration<\/strong>:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>When atoms form ions, they do so by losing or gaining electrons to achieve a stable electron configuration. Most elements aim to attain the nearest noble gas configuration, which is stable.<\/li>\n\n\n\n<li><strong>Group 1 elements<\/strong> (the alkali metals) all have one electron in their outermost shell. When these elements form ions, they tend to lose this single valence electron to achieve the electron configuration of the preceding noble gas. This process leaves them with a <strong>+1 charge<\/strong>, as they lose one negatively charged electron and have one more proton than electrons.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Lithium (Li)<\/strong>:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The electron configuration of lithium is 1s\u00b2 2s\u00b9. When lithium loses its single electron from the 2s orbital, it forms a Li\u207a ion with the electron configuration of helium (1s\u00b2), achieving stability.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Sodium (Na)<\/strong>:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sodium has the electron configuration 1s\u00b2 2s\u00b2 2p\u2076 3s\u00b9. When sodium loses its single electron from the 3s orbital, it forms a Na\u207a ion with the electron configuration of neon (1s\u00b2 2s\u00b2 2p\u2076), which is stable.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Potassium (K)<\/strong>:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Potassium&#8217;s electron configuration is 1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b9. Upon losing its single electron from the 4s orbital, potassium forms a K\u207a ion with the electron configuration of argon (1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076), achieving stability.<\/li>\n<\/ul>\n\n\n\n<p>These elements (lithium, sodium, and potassium) are all <strong>alkali metals<\/strong> in Group 1 of the periodic table. They all follow the same pattern of forming <strong>+1 ions<\/strong> by losing their single valence electron, making answer <strong>C<\/strong> correct.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Why Not the Other Options?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Option A (sodium, magnesium, aluminum)<\/strong>:<\/li>\n\n\n\n<li>Magnesium (Mg) and aluminum (Al) do not form +1 ions. Magnesium, being in Group 2, forms Mg\u00b2\u207a ions by losing two electrons. Aluminum, in Group 13, forms Al\u00b3\u207a by losing three electrons.<\/li>\n\n\n\n<li><strong>Option B (strontium, magnesium, calcium)<\/strong>:<\/li>\n\n\n\n<li>Strontium (Sr) and calcium (Ca) are alkaline earth metals (Group 2) and form +2 ions by losing two electrons. Magnesium (Mg) forms a +2 ion as well. Therefore, this group does not form +1 ions.<\/li>\n<\/ul>\n\n\n\n<p>Thus, only lithium, sodium, and potassium from <strong>Option C<\/strong> form +1 ions.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following elements form +1 ions?A sodium, magnesium, aluminumB strontium, magnesium, calciumC lithium, sodium, potassium The Correct Answer and Explanation is: The correct answer is C: lithium, sodium, potassium. Explanation: To understand why lithium (Li), sodium (Na), and potassium (K) form +1 ions, we need to look at their atomic structures and the [&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-167758","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/167758","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=167758"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/167758\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=167758"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=167758"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=167758"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}