{"id":20360,"date":"2024-02-11T04:52:42","date_gmt":"2024-02-10T23:22:42","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=20360"},"modified":"2025-04-06T00:49:05","modified_gmt":"2025-04-05T19:19:05","slug":"halogen","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/halogen\/","title":{"rendered":"What are Halogens?"},"content":{"rendered":"<h2>About Halogens<\/h2>\n<ul>\n<li>Halogens are any of the\u00a0six nonmetallic elements that constitute\u00a0Group 17\u00a0(Group VIIa)\u00a0of the periodic table.<\/li>\n<li>The halogen elements are:\n<ul>\n<li>fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and\u00a0tennessine (Ts).<\/li>\n<\/ul>\n<\/li>\n<li>The word\u00a0halogen means &#8220;salt-producing\u201d, because because\u00a0halogens react with metals\u00a0to produce many important salts, of which\u00a0sodium chloride\u2014table salt, or halite\u2014is best known.<\/li>\n<li>Properties:\n<ul>\n<li>Halogens are\u00a0so reactive that they\u00a0do not occur as free elements in nature. They are the\u00a0most reactive nonmetals.<\/li>\n<li>The halogen atoms\u00a0carry seven valence electrons in their outermost electron shell.<\/li>\n<\/ul>\n<\/li>\n<li>This\u00a0accounts for their higher reactivity and\u00a0tendency to gain one electron\u00a0and form ionic bonds\u00a0or share electrons with other elements\u00a0to form covalent bonds.\n<ul>\n<li>Among all the halogens,\u00a0fluorine is the most reactive, and Iodine is the least reactive of all.<\/li>\n<li>In combined form,\u00a0fluorine is the most abundant of the halogens in Earth\u2019s crust.\u00a0<\/li>\n<li>Halogens are the\u00a0only group on the periodic table\u00a0that has elements in the solid,\u00a0liquid, and gas phase\u00a0at room temperature. At normal temperature and pressure,\u00a0chlorine and fluorine are gases,\u00a0bromine is a\u00a0liquid, and\u00a0iodine and astatine are solids.<\/li>\n<li>They are\u00a0powerful oxidizing agents.<\/li>\n<li>They have very\u00a0high electronegativities.<\/li>\n<li>Halogens have a\u00a0tendency to form hydrogen halides, which are potent acids when they combine with hydrogen.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>Q1) What is electronegativity?<\/h3>\n<p>Electronegativity, in chemistry, is the ability of an atom to attract to itself an electron pair shared with another atom in a chemical bond.<\/p>\n<p><strong>Source:<\/strong> <a href=\"https:\/\/www.chemistryworld.com\/news\/unusual-bridging-fluorine-discovered-in-one-of-a-kind-interhalogen-ion\/4018930.article\" target=\"_blank\" rel=\"nofollow noopener\"><u>Unusual bridging fluorine discovered in one-of-a-kind interhalogen ion<\/u><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Halogens are any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table.<\/p>\n","protected":false},"author":5,"featured_media":20361,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-20360","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/20360","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=20360"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/20360\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/20361"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=20360"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=20360"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=20360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}