{"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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\"><\/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 known for its mirror-like appearance and unique behavior. \ud83d\udd38 Chemical Properties Mercury is toxic and must be handled with extreme care. It forms compounds like mercury chloride (HgCl\u2082) and mercuric oxide (HgO). \ud83d\udcd8 Basic Things to Know Mercury is&#8230;<\/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":[],"aioseo_head":"\n\t\t<!-- 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