{"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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udd39 Basic Information Gallium is a soft, silvery metal that is famous for melting in your hand! It\u2019s a rare, fascinating element used in electronics and semiconductors. \ud83d\udd38 Chemical Properties Gallium is not very reactive, but it slowly oxidizes in air. It forms compounds with fluorine, chlorine, and other nonmetals, mostly in the +3 oxidation&#8230;<\/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":[],"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: Gallium Discovered By: Paul-\u00c9mile Lecoq de Boisbaudran Year of Discovery: 1875 Category: Post-Transition Metal Group: 13 (Group IIIA \u2013 Boron Group) State at Room Temperature: Solid (but melts just above room temperature!) \ud83c\udf21\ufe0f\ud83d\udca7 Gallium is a soft, silvery metal that is famous for melting in your hand! 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