{"id":2452,"date":"2025-06-27T14:57:03","date_gmt":"2025-06-27T09:27:03","guid":{"rendered":"https:\/\/texpertssolutions.com\/notes\/?p=2452"},"modified":"2025-06-29T16:44:53","modified_gmt":"2025-06-29T11:14:53","slug":"gallium-ga","status":"publish","type":"post","link":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/gallium-ga\/","title":{"rendered":"Gallium (Ga)"},"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>: Gallium<\/li>\n\n\n\n<li><strong>Discovered By<\/strong>: Paul-\u00c9mile Lecoq de Boisbaudran<\/li>\n\n\n\n<li><strong>Year of Discovery<\/strong>: 1875<\/li>\n\n\n\n<li><strong>Category<\/strong>: Post-Transition Metal<\/li>\n\n\n\n<li><strong>Group<\/strong>: 13 (Group IIIA \u2013 Boron Group)<\/li>\n\n\n\n<li><strong>State at Room Temperature<\/strong>: Solid (but melts just above room temperature!) \ud83c\udf21\ufe0f\ud83d\udca7<\/li>\n<\/ul>\n\n\n\n<p>Gallium is a <strong>soft, silvery metal<\/strong> that is famous for <strong>melting in your hand<\/strong>! It\u2019s a rare, fascinating element used in <strong>electronics and semiconductors<\/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\udd38 Chemical Properties<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Chemical Symbol<\/strong>: Ga<\/li>\n\n\n\n<li><strong>Atomic Number<\/strong>: 31<\/li>\n\n\n\n<li><strong>Atomic Mass<\/strong>: ~69.72 u<\/li>\n\n\n\n<li><strong>Valency<\/strong>: 3<\/li>\n\n\n\n<li><strong>Electronic Configuration<\/strong>: [Ar] 3d\u00b9\u2070 4s\u00b2 4p\u00b9<\/li>\n<\/ul>\n\n\n\n<p>Gallium is <strong>not very reactive<\/strong>, but it slowly oxidizes in air. It forms <strong>compounds with fluorine, chlorine, and other nonmetals<\/strong>, mostly in the +3 oxidation state.<\/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>Gallium is <strong>solid at room temperature<\/strong> but <strong>melts at just 29.76\u00b0C (85.6\u00b0F)<\/strong> \u2014 so it can melt in your palm on a warm day! \ud83e\udd32\ud83d\udca7<\/p>\n\n\n\n<p>It was named after <strong>&#8220;Gallia,&#8221;<\/strong> the Latin name for France \ud83c\uddeb\ud83c\uddf7 \u2014 and also a play on the discoverer&#8217;s own name (&#8220;Lecoq&#8221; means \u201cthe rooster\u201d in French, and the Latin for rooster is <em>gallus<\/em>).<\/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>Gallium can <strong>melt in your hand<\/strong> but doesn\u2019t boil until 2200\u00b0C \u2014 that\u2019s a huge liquid range! \ud83d\udd25<\/li>\n\n\n\n<li>It <strong>expands when it freezes<\/strong>, like water \u2014 which can break containers if not handled properly. \u2744\ufe0f\ud83d\udca5<\/li>\n\n\n\n<li>It was predicted by <strong>Dmitri Mendeleev<\/strong> before it was discovered, as \u201ceka-aluminum.\u201d<\/li>\n\n\n\n<li>Gallium sticks to <strong>glass and skin<\/strong>, making it hard to handle without tools.<\/li>\n\n\n\n<li>Unlike mercury, gallium is <strong>not toxic<\/strong> and is safe to handle (but not eat!). \ud83d\ude04<\/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>Electronics<\/strong>: Used in <strong>semiconductors and transistors<\/strong>, especially gallium arsenide (GaAs). \u26a1\ud83d\udcf1<\/li>\n\n\n\n<li><strong>LEDs &amp; Solar Panels<\/strong>: Found in <strong>light-emitting diodes and solar cells<\/strong>. \u2600\ufe0f\ud83d\udca1<\/li>\n\n\n\n<li><strong>Thermometers<\/strong>: Used in some <strong>high-temperature thermometers<\/strong> instead of mercury. \ud83c\udf21\ufe0f<\/li>\n\n\n\n<li><strong>Mirrors<\/strong>: Gallium alloys are used in <strong>shiny, reflective coatings<\/strong>. \ud83e\ude9e<\/li>\n\n\n\n<li><strong>Medical Imaging &amp; Research<\/strong>: Radioactive gallium is used in <strong>cancer scans and studies<\/strong>. \ud83c\udfe5<\/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>Gallium is a <strong>truly unique element<\/strong> \u2014 it melts in your hand, shines in electronics, and even plays a role in medical technology. For students, gallium is a perfect example of how <strong>surprising and useful chemistry can be<\/strong>. It&#8217;s not just cool \u2014 it&#8217;s <strong>scientifically powerful<\/strong>! \ud83d\udca7\ud83d\udd2c<\/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 Gallium is a soft, silvery metal that is famous for melting in your &hellip; <a title=\"Gallium (Ga)\" class=\"hm-read-more\" href=\"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/gallium-ga\/\"><span class=\"screen-reader-text\">Gallium (Ga)<\/span>Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":2799,"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-2452","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\/40.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\/2452","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=2452"}],"version-history":[{"count":1,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/posts\/2452\/revisions"}],"predecessor-version":[{"id":2508,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/posts\/2452\/revisions\/2508"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/media\/2799"}],"wp:attachment":[{"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/media?parent=2452"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/categories?post=2452"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/tags?post=2452"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}