{"id":37983,"date":"2025-06-26T07:19:49","date_gmt":"2025-06-26T07:19:49","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=37983"},"modified":"2025-06-26T07:19:51","modified_gmt":"2025-06-26T07:19:51","slug":"how-many-electrons-do-these-elements-have-in-their-outer-shell","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/how-many-electrons-do-these-elements-have-in-their-outer-shell\/","title":{"rendered":"How many electrons do these elements have in their outer shell"},"content":{"rendered":"\n<p>How many electrons do these elements have in their outer shell? 1. Nitrogen 2. Chlorine 3. Calcium (b) Explain how you got your answer.<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p><strong>Correct Answers:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Nitrogen<\/strong> has <strong>5 electrons<\/strong> in its outer shell.<\/li>\n\n\n\n<li><strong>Chlorine<\/strong> has <strong>7 electrons<\/strong> in its outer shell.<\/li>\n\n\n\n<li><strong>Calcium<\/strong> has <strong>2 electrons<\/strong> in its outer shell.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Explanation<\/strong><\/p>\n\n\n\n<p>To determine how many electrons are in the outer shell (also called valence electrons) of an element, we use the element&#8217;s <strong>atomic number<\/strong>, which tells us the total number of electrons in a neutral atom. Then we consider the <strong>electron configuration<\/strong> or use the element\u2019s <strong>group number<\/strong> in the periodic table.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Nitrogen (N)<\/strong> has an atomic number of <strong>7<\/strong>, meaning it has 7 electrons. The electrons fill the shells in this order:\n<ul class=\"wp-block-list\">\n<li>The first shell holds up to 2 electrons.<\/li>\n\n\n\n<li>The second shell holds up to 8 electrons.<br>So, nitrogen&#8217;s configuration is <strong>2 electrons in the first shell and 5 electrons in the second shell<\/strong>. Therefore, nitrogen has <strong>5 outer shell electrons<\/strong>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Chlorine (Cl)<\/strong> has an atomic number of <strong>17<\/strong>, meaning it has 17 electrons. The electron configuration is:\n<ul class=\"wp-block-list\">\n<li>2 in the first shell<\/li>\n\n\n\n<li>8 in the second shell<\/li>\n\n\n\n<li>7 in the third shell<br>This means chlorine has <strong>7 electrons in its outer shell<\/strong>. Elements in <strong>Group 17<\/strong> (like chlorine) all have 7 valence electrons, which makes them very reactive as they seek to gain one more to complete their outer shell.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Calcium (Ca)<\/strong> has an atomic number of <strong>20<\/strong>, so it has 20 electrons. The configuration is:\n<ul class=\"wp-block-list\">\n<li>2 in the first shell<\/li>\n\n\n\n<li>8 in the second<\/li>\n\n\n\n<li>8 in the third<\/li>\n\n\n\n<li>2 in the fourth shell<br>Therefore, calcium has <strong>2 electrons in its outer shell<\/strong>. Calcium is in <strong>Group 2<\/strong>, and elements in this group always have 2 valence electrons. These electrons are easily lost, which is why calcium readily forms positive ions.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>In summary, knowing the atomic number and using either electron configuration or the periodic table group helps us determine the number of outer shell electrons.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"852\" height=\"1024\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-994.jpeg\" alt=\"\" class=\"wp-image-37984\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-994.jpeg 852w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-994-250x300.jpeg 250w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-994-768x923.jpeg 768w\" sizes=\"auto, (max-width: 852px) 100vw, 852px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>How many electrons do these elements have in their outer shell? 1. Nitrogen 2. Chlorine 3. Calcium (b) Explain how you got your answer. The Correct Answer and Explanation is: Correct Answers: Explanation To determine how many electrons are in the outer shell (also called valence electrons) of an element, we use the element&#8217;s atomic [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-37983","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/37983","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=37983"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/37983\/revisions"}],"predecessor-version":[{"id":37985,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/37983\/revisions\/37985"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=37983"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=37983"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=37983"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}