{"id":2574,"date":"2025-06-27T16:00:32","date_gmt":"2025-06-27T10:30:32","guid":{"rendered":"https:\/\/texpertssolutions.com\/notes\/?p=2574"},"modified":"2025-06-29T16:44:52","modified_gmt":"2025-06-29T11:14:52","slug":"iridium-ir","status":"publish","type":"post","link":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/iridium-ir\/","title":{"rendered":"Iridium (Ir)"},"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>: Iridium<\/li>\n\n\n\n<li><strong>Discovered By<\/strong>: Smithson Tennant<\/li>\n\n\n\n<li><strong>Year of Discovery<\/strong>: 1803<\/li>\n\n\n\n<li><strong>Category<\/strong>: Transition Metal<\/li>\n\n\n\n<li><strong>Group<\/strong>: 9<\/li>\n\n\n\n<li><strong>State at Room Temperature<\/strong>: Solid (silvery-white metal) \u2699\ufe0f<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Iridium is known for being <strong>one of the densest and most corrosion-resistant metals<\/strong> on Earth.<\/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>: Ir<\/li>\n\n\n\n<li><strong>Atomic Number<\/strong>: 77<\/li>\n\n\n\n<li><strong>Atomic Mass<\/strong>: ~192.22 u<\/li>\n\n\n\n<li><strong>Valency<\/strong>: +3, +4, +6<\/li>\n\n\n\n<li><strong>Electronic Configuration<\/strong>: [Xe] 4f\u00b9\u2074 5d\u2077 6s\u00b2<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Iridium is extremely <strong>hard and durable<\/strong>, and it resists oxidation even at very high temperatures.<\/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\">Iridium is so tough that it is often used in <strong>very harsh environments<\/strong> like deep-sea cables and spacecraft parts. It is also <strong>very rare<\/strong>, making it valuable for special applications.<\/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>Iridium is one of the <strong>rarest elements in the Earth&#8217;s crust<\/strong>.<\/li>\n\n\n\n<li>It is <strong>so resistant to corrosion<\/strong> that it can survive in almost all acids, even aqua regia (a mix of nitric and hydrochloric acids). \ud83e\uddea<\/li>\n\n\n\n<li>The <strong>Iridium layer<\/strong> in rocks worldwide is linked to the asteroid impact that caused the dinosaurs\u2019 extinction! \ud83c\udf0d\ud83d\udca5<\/li>\n\n\n\n<li>It\u2019s used in <strong>high-performance spark plugs<\/strong> for cars and aircraft. \ud83d\ude97\u2708\ufe0f<\/li>\n\n\n\n<li>Iridium alloys are used in <strong>pen tips (like the famous fountain pen nibs)<\/strong> because of their hardness and smooth writing. \ud83d\udd8b\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<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Spark Plugs &amp; Electrical Contacts<\/strong>: For durability under high temperatures. \ud83d\udd25\u26a1<\/li>\n\n\n\n<li><strong>Crucibles &amp; Laboratory Equipment<\/strong>: Can handle extremely hot and corrosive environments. \u2697\ufe0f<\/li>\n\n\n\n<li><strong>Fountain Pen Tips<\/strong>: Known for smooth, long-lasting writing tips. \ud83d\udd8b\ufe0f<\/li>\n\n\n\n<li><strong>Spacecraft &amp; Satellites<\/strong>: Used for parts that need to withstand harsh conditions in space. \ud83d\ude80<\/li>\n\n\n\n<li><strong>Catalysts<\/strong>: In chemical reactions, especially in the automotive industry.<\/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\">Iridium is a <strong>rare, strong, and corrosion-proof metal<\/strong> essential for technology that must survive extreme conditions. For students, it\u2019s a cool example of how some elements combine <strong>strength and rarity<\/strong> to help advance science and industry! \ud83d\udee0\ufe0f\ud83c\udf1f<\/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 Iridium is known for being one of the densest and most corrosion-resistant metals on Earth. \ud83d\udd38 Chemical Properties Iridium is extremely hard and durable, and it resists oxidation even at very high temperatures. \ud83d\udcd8 Basic Things to Know Iridium is so tough that it is often used in very harsh environments like&#8230;<\/p>\n","protected":false},"author":1,"featured_media":2738,"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-2574","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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