{"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>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>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>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>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><\/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 &hellip; <a title=\"Iridium (Ir)\" class=\"hm-read-more\" href=\"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/iridium-ir\/\"><span class=\"screen-reader-text\">Iridium (Ir)<\/span>Read more<\/a><\/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":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/texpertssolutions.com\/notes\/wp-content\/uploads\/2025\/06\/97.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\/2574","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=2574"}],"version-history":[{"count":1,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/posts\/2574\/revisions"}],"predecessor-version":[{"id":2592,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/posts\/2574\/revisions\/2592"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/media\/2738"}],"wp:attachment":[{"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/media?parent=2574"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/categories?post=2574"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/tags?post=2574"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}