{"id":12667,"date":"2023-06-30T04:53:27","date_gmt":"2023-06-29T23:23:27","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=12667"},"modified":"2025-04-01T20:42:48","modified_gmt":"2025-04-01T15:12:48","slug":"halogens","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/halogens\/","title":{"rendered":"Halogens"},"content":{"rendered":"<h2><strong>Key findings of the report:<\/strong><\/h2>\n<p>&nbsp;<\/p>\n<ul>\n<li>Oceans along with absorbing carbon dioxide and moderating the climate also <strong>cool the planet<\/strong> by <strong>releasing short-lived halogens<\/strong> such as chlorine, bromine and iodine<\/li>\n<li>The short-lived halogens from the ocean reduce warming by depleting ozone.<\/li>\n<li>They <strong>increase methane\u2019s lifetime<\/strong> in the atmosphere by destroying hydroxyl radicals (OH).<\/li>\n<li>They have increased the global methane burden by 14 per cent and 9 per cent for pre-industrial and present-day conditions.<\/li>\n<li>Halogens <strong>increase the levels of water vapour, a greenhouse gas<\/strong> in the atmosphere.<\/li>\n<li>The emission of halogen from the ocean is not the same across the world.<\/li>\n<li>Over continents, the emissions are small while it is bigger in polar regions and some places with higher ozone levels.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Key facts about Halogens:<\/h3>\n<ul>\n<li>The term Halogen in Greek means <strong>salt-producing<\/strong> because <strong>it reacts<\/strong> with many metals to <strong>produce salts.<\/strong>\u00a0<\/li>\n<li>They are a group of elements <strong>located in Group 17 of the periodic table which <\/strong>includes fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).<\/li>\n<li>In 1826, Swedish <strong>chemist Jons Berzelius<\/strong> coined the term halogen for the entire group of elements.\u00a0<\/li>\n<li>Unlike metals, they exist in <strong>all three different states<\/strong> of matter in their standard state.<\/li>\n<li><strong>For example,<\/strong> fluorine is found naturally as a gas, bromine as a liquid, and the larger iodine is found naturally as a solid.<\/li>\n<li><strong>Reactivity:<\/strong> Halogens are the most <strong>reactive nonmetals on the periodic table<\/strong> and are powerful oxidizing agents.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<hr \/>\n<h3>Q1) What is GHG?<\/h3>\n<p>GHG stands for greenhouse gas. These are gases that trap heat in the Earth&#8217;s atmosphere, leading to the greenhouse effect and contributing to global warming and climate change.<\/p>\n<p><strong>Source:<\/strong>\u00a0<a href=\"https:\/\/www.downtoearth.org.in\/news\/climate-change\/oceans-cool-the-planet-by-releasing-short-lived-halogens-that-contribute-8-10-per-cent-of-cooling-study-90312\" target=\"_blank\" rel=\"nofollow noopener\"><u>Oceans cool the planet by releasing short-lived halogens that contribute 8-10 per cent of cooling: Study<\/u><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Halogens are located in Group 17 of the periodic table which includes fluorine, chlorine , bromine, iodine, and astatine.<\/p>\n","protected":false},"author":5,"featured_media":12668,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-12667","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\/12667","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=12667"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/12667\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/12668"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=12667"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=12667"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=12667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}