{"id":2577,"date":"2025-06-27T15:54:57","date_gmt":"2025-06-27T10:24:57","guid":{"rendered":"https:\/\/texpertssolutions.com\/notes\/?p=2577"},"modified":"2025-06-29T16:44:52","modified_gmt":"2025-06-29T11:14:52","slug":"mercury-hg","status":"publish","type":"post","link":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/mercury-hg\/","title":{"rendered":"Mercury (Hg)"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">\ud83d\udd39 Basic Information<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Element Name<\/strong>: Mercury<\/li>\n\n\n\n<li><strong>Discovered By<\/strong>: Known since ancient times (used by ancient Egyptians and Chinese)<\/li>\n\n\n\n<li><strong>Year of Discovery<\/strong>: Prehistoric (no exact date)<\/li>\n\n\n\n<li><strong>Category<\/strong>: Transition Metal<\/li>\n\n\n\n<li><strong>Group<\/strong>: 12<\/li>\n\n\n\n<li><strong>State at Room Temperature<\/strong>: Liquid (silvery, shiny metal) \ud83d\udca7<\/li>\n<\/ul>\n\n\n\n<p>Mercury is the <strong>only metal that is liquid at room temperature<\/strong>, and it&#8217;s known for its <strong>mirror-like appearance<\/strong> and unique behavior.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd38 Chemical Properties<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Chemical Symbol<\/strong>: Hg <em>(from the Latin word Hydrargyrum, meaning &#8220;silver water&#8221;)<\/em><\/li>\n\n\n\n<li><strong>Atomic Number<\/strong>: 80<\/li>\n\n\n\n<li><strong>Atomic Mass<\/strong>: ~200.59 u<\/li>\n\n\n\n<li><strong>Valency<\/strong>: +1, +2<\/li>\n\n\n\n<li><strong>Electronic Configuration<\/strong>: [Xe] 4f\u00b9\u2074 5d\u00b9\u2070 6s\u00b2<\/li>\n<\/ul>\n\n\n\n<p>Mercury is <strong>toxic<\/strong> and must be handled with extreme care. It forms compounds like <strong>mercury chloride (HgCl\u2082)<\/strong> and <strong>mercuric oxide (HgO)<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udcd8 Basic Things to Know<\/h2>\n\n\n\n<p>Mercury is <strong>very dense<\/strong> and does <strong>not wet glass<\/strong>, which made it useful in old thermometers and barometers. Because of its <strong>toxicity<\/strong>, it\u2019s now largely replaced with safer alternatives.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83e\udd14 Interesting Facts<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mercury was once called <strong>&#8220;quicksilver&#8221;<\/strong> due to its shiny, flowing appearance. \ud83e\ude9e<\/li>\n\n\n\n<li>It is <strong>extremely heavy<\/strong> \u2014 a liter of mercury weighs over <strong>13 kg (29 lbs)<\/strong>! \u2696\ufe0f<\/li>\n\n\n\n<li>Mercury <strong>expands evenly when heated<\/strong>, which made it perfect for <strong>thermometers<\/strong>. \ud83c\udf21\ufe0f<\/li>\n\n\n\n<li>The <strong>planet Mercury<\/strong> is named after the Roman messenger god \u2014 fast and fluid, like the element! \ud83e\ude90<\/li>\n\n\n\n<li>Mercury vapor is dangerous \u2014 even a small spill can be harmful if not cleaned properly. \u26a0\ufe0f<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd27 Common Uses (Past and Present)<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Thermometers &amp; Barometers<\/strong>: Used in old scientific tools to measure <strong>temperature and pressure<\/strong>. \ud83c\udf21\ufe0f<\/li>\n\n\n\n<li><strong>Fluorescent Lamps<\/strong>: Mercury vapor helps produce <strong>UV light<\/strong> inside these tubes. \ud83d\udca1<\/li>\n\n\n\n<li><strong>Dental Fillings<\/strong> (amalgams): Mercury mixed with other metals was once used in <strong>tooth fillings<\/strong>. \ud83e\uddb7<\/li>\n\n\n\n<li><strong>Gold Mining<\/strong> (historic): Used to <strong>extract gold<\/strong> from ores \u2014 now mostly banned due to environmental risks.<\/li>\n\n\n\n<li><strong>Switches &amp; Relays<\/strong>: Used in some <strong>electrical applications<\/strong>, though modern tech is moving away from it.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udcda Conclusion<\/h2>\n\n\n\n<p>Mercury is a <strong>mysterious and historic metal<\/strong>, famous for being <strong>liquid, shiny, and dangerously toxic<\/strong>. Though it&#8217;s mostly phased out in daily use, it played a <strong>huge role in early science and medicine<\/strong>. For students, mercury is a reminder of how amazing \u2014 and sometimes risky \u2014 the elements can be! \ud83d\udca7\ud83e\uddea<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udd39 Basic Information Mercury is the only metal that is liquid at room temperature, and it&#8217;s &hellip; <a title=\"Mercury (Hg)\" class=\"hm-read-more\" href=\"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/mercury-hg\/\"><span class=\"screen-reader-text\">Mercury (Hg)<\/span>Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":2795,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[672],"tags":[656,652,653,661,647,643,648,670,666,664,662,650,651,645,660,663,655,646,657,659,658,665,642,644,668,669,667,649,671,654],"class_list":["post-2577","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-periodic-table-for-students","tag-actinides","tag-alkali-metals","tag-alkaline-earth-metals","tag-atomic-mass","tag-atomic-number","tag-chemical-elements","tag-chemical-symbols","tag-chemistry-basics","tag-chemistry-study-guide","tag-electron-configuration","tag-electronegativity","tag-element-groups","tag-element-periods","tag-element-properties","tag-halogens","tag-ionization-energy","tag-lanthanides","tag-mendeleev-periodic-table","tag-metalloids","tag-noble-gases","tag-nonmetals","tag-oxidation-states","tag-periodic-table","tag-periodic-table-elements","tag-periodic-table-explained","tag-periodic-table-facts","tag-periodic-table-for-students","tag-periodic-trends","tag-science-education","tag-transition-metals"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/texpertssolutions.com\/notes\/wp-content\/uploads\/2025\/06\/36.png?fit=1280%2C720&ssl=1","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/posts\/2577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/comments?post=2577"}],"version-history":[{"count":1,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/posts\/2577\/revisions"}],"predecessor-version":[{"id":2579,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/posts\/2577\/revisions\/2579"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/media\/2795"}],"wp:attachment":[{"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/media?parent=2577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/categories?post=2577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/tags?post=2577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}