{"id":38733,"date":"2025-06-26T12:03:39","date_gmt":"2025-06-26T12:03:39","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=38733"},"modified":"2025-06-26T12:03:41","modified_gmt":"2025-06-26T12:03:41","slug":"phosgene-was-used-as-a-chemical-weapon-during-world-war-i","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/phosgene-was-used-as-a-chemical-weapon-during-world-war-i\/","title":{"rendered":"Phosgene was used as a chemical weapon during World War I"},"content":{"rendered":"\n<p>Phosgene was used as a chemical weapon during World War I. Despite the name, phosgene molecules contain no atoms of phosphorus. Instead, they contain atoms of carbon and the group 16 element in the second row of the periodic table and the group 17 element in the third row. What are the identities and atomic numbers of the two elements?<\/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 Answer:<\/strong><br>The two elements in phosgene are <strong>oxygen (O)<\/strong> with atomic number <strong>8<\/strong>, and <strong>chlorine (Cl)<\/strong> with atomic number <strong>17<\/strong>.<\/p>\n\n\n\n<p><strong>Explanation:<\/strong><\/p>\n\n\n\n<p>Phosgene is a toxic chemical compound with the chemical formula <strong>COCl\u2082<\/strong>. It consists of one carbon atom, one oxygen atom, and two chlorine atoms. Although its name might suggest a connection to phosphorus, there is <strong>no phosphorus<\/strong> in phosgene. Instead, the name originates from the Greek words <em>phos<\/em> meaning light and <em>genes<\/em> meaning born or produced, because phosgene was first synthesized by exposing a mixture of carbon monoxide and chlorine gas to sunlight.<\/p>\n\n\n\n<p>The question mentions two specific clues to identify the non-carbon elements:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>A <strong>group 16 element in the second row<\/strong> of the periodic table.<\/li>\n\n\n\n<li>A <strong>group 17 element in the third row<\/strong> of the periodic table.<\/li>\n<\/ol>\n\n\n\n<p>The periodic table is organized into groups (vertical columns) and periods or rows (horizontal rows).<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Group 16<\/strong> elements are also known as the <strong>chalcogens<\/strong>. In the second row of the periodic table, the group 16 element is <strong>oxygen (O)<\/strong>, which has the atomic number <strong>8<\/strong>. Oxygen is a non-metal and is essential in many compounds including water and carbon dioxide.<\/li>\n\n\n\n<li><strong>Group 17<\/strong> elements are known as the <strong>halogens<\/strong>. In the third row of the periodic table, the group 17 element is <strong>chlorine (Cl)<\/strong>, with the atomic number <strong>17<\/strong>. Chlorine is a highly reactive element that commonly forms compounds with other elements, such as in sodium chloride (NaCl) and phosgene.<\/li>\n<\/ul>\n\n\n\n<p>Phosgene\u2019s structure is simple: a central carbon atom double-bonded to an oxygen atom and single-bonded to two chlorine atoms. It was used as a choking agent during World War I due to its deadly effects on the respiratory system.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Phosgene was used as a chemical weapon during World War I. Despite the name, phosgene molecules contain no atoms of phosphorus. Instead, they contain atoms of carbon and the group 16 element in the second row of the periodic table and the group 17 element in the third row. What are the identities and 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-38733","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/38733","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=38733"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/38733\/revisions"}],"predecessor-version":[{"id":38737,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/38733\/revisions\/38737"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=38733"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=38733"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=38733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}