{"id":2383,"date":"2025-06-27T14:05:12","date_gmt":"2025-06-27T08:35:12","guid":{"rendered":"https:\/\/texpertssolutions.com\/notes\/?p=2383"},"modified":"2025-06-29T16:44:55","modified_gmt":"2025-06-29T11:14:55","slug":"lithium-li","status":"publish","type":"post","link":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/lithium-li\/","title":{"rendered":"Lithium (Li)"},"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>: Lithium<\/li>\n\n\n\n<li><strong>Discovered By<\/strong>: Johan August Arfwedson<\/li>\n\n\n\n<li><strong>Year of Discovery<\/strong>: 1817<\/li>\n\n\n\n<li><strong>Category<\/strong>: Alkali Metal<\/li>\n\n\n\n<li><strong>Group<\/strong>: 1 (Group IA \u2013 Alkali Metals)<\/li>\n\n\n\n<li><strong>State at Room Temperature<\/strong>: Solid (soft, silvery-white metal) \u26aa<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Lithium is a <strong>light, soft, and highly reactive metal<\/strong>. It belongs to the <strong>alkali metals<\/strong>, which are known for reacting strongly with water and air. Lithium is the <strong>lightest metal<\/strong> and one of the most important elements in modern technology!<\/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>: Li<\/li>\n\n\n\n<li><strong>Atomic Number<\/strong>: 3<\/li>\n\n\n\n<li><strong>Atomic Mass<\/strong>: ~6.94 u<\/li>\n\n\n\n<li><strong>Valency<\/strong>: 1<\/li>\n\n\n\n<li><strong>Electronic Configuration<\/strong>: 1s\u00b2 2s\u00b9<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Lithium has <strong>one electron in its outer shell<\/strong>, making it highly reactive. It easily forms <strong>lithium compounds<\/strong> like lithium carbonate (Li\u2082CO\u2083), which are used in batteries and medicine.<\/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\">Lithium is <strong>never found free in nature<\/strong> due to its reactivity. Instead, it&#8217;s found in minerals and brine lakes. \ud83c\udf0a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Despite being a metal, lithium is <strong>so soft you can cut it with a knife<\/strong> \u2014 and it floats on water! It reacts quickly, especially with water, producing hydrogen gas and heat. \ud83d\udca5<\/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>Lithium is the <strong>lightest metal<\/strong> and the <strong>least dense solid element<\/strong>. \ud83e\udeb6<\/li>\n\n\n\n<li>It&#8217;s used in <strong>rechargeable batteries<\/strong> for phones, laptops, and electric vehicles. \ud83d\udd0b\ud83d\ude97<\/li>\n\n\n\n<li>Lithium salts are used as <strong>mood stabilizers<\/strong> in medicine (to treat bipolar disorder). \ud83e\udde0<\/li>\n\n\n\n<li>It burns with a <strong>bright crimson-red flame<\/strong>, useful in fireworks and flares. \ud83c\udf86<\/li>\n\n\n\n<li>The name &#8220;lithium&#8221; comes from the Greek word <strong>&#8220;lithos,&#8221;<\/strong> meaning <strong>stone<\/strong> \u2014 because it was first found in rocks.<\/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<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Rechargeable Batteries<\/strong>: Used in <strong>phones, laptops, electric cars, and power tools<\/strong>. \ud83d\udcf1\ud83d\udd0b<\/li>\n\n\n\n<li><strong>Aerospace<\/strong>: Lightweight lithium alloys are used in <strong>aircraft and space tech<\/strong>. \u2708\ufe0f\ud83d\ude80<\/li>\n\n\n\n<li><strong>Medicine<\/strong>: Lithium compounds help treat <strong>mental health conditions<\/strong> like bipolar disorder. \ud83d\udc8a<\/li>\n\n\n\n<li><strong>Glass &amp; Ceramics<\/strong>: Added to make materials more heat-resistant. \ud83c\udf76\ud83d\udd25<\/li>\n\n\n\n<li><strong>Lubricants<\/strong>: Used in <strong>high-performance greases and oils<\/strong>.<\/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\">Lithium may be small and light, but it plays a <strong>huge role in the modern world<\/strong>. From powering devices to supporting mental health, lithium is a perfect example of how chemistry is changing the future. For students, it\u2019s a cool intro to <strong>how science meets technology and medicine<\/strong>. \ud83d\udd2c\ud83c\udf0d<\/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 Lithium is a light, soft, and highly reactive metal. It belongs to the alkali metals, which are known for reacting strongly with water and air. Lithium is the lightest metal and one of the most important elements in modern technology! \ud83d\udd38 Chemical Properties Lithium has one electron in its outer shell, making&#8230;<\/p>\n","protected":false},"author":1,"featured_media":2758,"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-2383","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<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\ud83d\udd39 Basic Information Element Name: Lithium Discovered By: Johan August Arfwedson Year of Discovery: 1817 Category: Alkali Metal Group: 1 (Group IA \u2013 Alkali Metals) State at Room Temperature: Solid (soft, silvery-white metal) \u26aa Lithium is a light, soft, and highly reactive metal. 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