{"id":2441,"date":"2025-06-27T14:58:12","date_gmt":"2025-06-27T09:28:12","guid":{"rendered":"https:\/\/texpertssolutions.com\/notes\/?p=2441"},"modified":"2025-06-29T16:44:53","modified_gmt":"2025-06-29T11:14:53","slug":"cobalt-co","status":"publish","type":"post","link":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/","title":{"rendered":"Cobalt (Co)"},"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>: Cobalt<\/li>\n\n\n\n<li><strong>Discovered By<\/strong>: Georg Brandt<\/li>\n\n\n\n<li><strong>Year of Discovery<\/strong>: Around 1735<\/li>\n\n\n\n<li><strong>Category<\/strong>: Transition Metal<\/li>\n\n\n\n<li><strong>Group<\/strong>: 9 (Group VIIIB \u2013 Transition Metals)<\/li>\n\n\n\n<li><strong>State at Room Temperature<\/strong>: Solid (hard, silver-gray metal) \u2699\ufe0f<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Cobalt is a <strong>hard, magnetic, silver-gray metal<\/strong> used in <strong>batteries, magnets, paints, and even in your body<\/strong>. It&#8217;s rare, useful, and has a <strong>rich blue connection to art and technology<\/strong>! \ud83c\udfa8\ud83d\udd0b<\/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>: Co<\/li>\n\n\n\n<li><strong>Atomic Number<\/strong>: 27<\/li>\n\n\n\n<li><strong>Atomic Mass<\/strong>: ~58.93 u<\/li>\n\n\n\n<li><strong>Valency<\/strong>: 2 or 3<\/li>\n\n\n\n<li><strong>Electronic Configuration<\/strong>: [Ar] 3d\u2077 4s\u00b2<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Cobalt is <strong>magnetic<\/strong>, like iron and nickel. It reacts slowly with air and acids and forms colorful compounds, especially <strong>bright blue<\/strong> ones.<\/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\">The name <strong>\u201cCobalt\u201d<\/strong> comes from the German word <strong>\u201cKobold,\u201d<\/strong> meaning <strong>goblin<\/strong> \u2014 because miners thought cobalt ores were useless and even poisonous. But they were wrong \u2014 cobalt turned out to be incredibly valuable!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It\u2019s usually found in minerals like <strong>cobaltite<\/strong> and as a byproduct of mining <strong>nickel and copper<\/strong>.<\/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>Cobalt is <strong>magnetic<\/strong>, and it stays magnetic at higher temperatures than most metals. \ud83e\uddf2<\/li>\n\n\n\n<li><strong>Cobalt blue<\/strong> pigment is used in <strong>glass, ceramics, and paints<\/strong> \u2014 giving it a deep blue color. \ud83c\udfa8<\/li>\n\n\n\n<li>It&#8217;s <strong>essential for human health<\/strong> \u2014 it&#8217;s part of <strong>vitamin B\u2081\u2082<\/strong>, needed for red blood cells. \ud83d\udc89<\/li>\n\n\n\n<li><strong>Rechargeable batteries<\/strong>, especially lithium-ion batteries, often contain cobalt. \ud83d\udd0b<\/li>\n\n\n\n<li>Cobalt was once used to color <strong>porcelain and stained glass windows<\/strong> in ancient times. \ud83e\ude9f<\/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>Batteries<\/strong>: Found in <strong>lithium-ion batteries<\/strong> used in phones, laptops, and electric cars. \u26a1\ud83d\udcf1\ud83d\ude97<\/li>\n\n\n\n<li><strong>Alloys<\/strong>: Used to make <strong>strong, heat-resistant metals<\/strong> for airplane engines and tools. \u2708\ufe0f\ud83d\udee0\ufe0f<\/li>\n\n\n\n<li><strong>Pigments<\/strong>: Used in making <strong>cobalt blue<\/strong> for paints, tiles, and glass. \ud83d\udfe6<\/li>\n\n\n\n<li><strong>Magnets<\/strong>: Cobalt is part of <strong>high-strength permanent magnets<\/strong> used in motors and speakers. \ud83d\udd0a<\/li>\n\n\n\n<li><strong>Medical Equipment<\/strong>: Radioactive cobalt-60 is used in <strong>radiation therapy<\/strong> for cancer treatment. \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\">Cobalt is a <strong>colorful, powerful, and magnetic metal<\/strong> that brings <strong>energy to batteries, beauty to art, and strength to alloys<\/strong>. From your smartphone to famous blue pottery, cobalt is a hidden hero in daily life. For students, cobalt is a great way to learn how science and technology often <strong>meet in the elements<\/strong>. \ud83d\udd2c\ud83d\udd35<\/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 Cobalt is a hard, magnetic, silver-gray metal used in batteries, magnets, paints, and even in your body. It&#8217;s rare, useful, and has a rich blue connection to art and technology! \ud83c\udfa8\ud83d\udd0b \ud83d\udd38 Chemical Properties Cobalt is magnetic, like iron and nickel. It reacts slowly with air and acids and forms colorful compounds,&#8230;<\/p>\n","protected":false},"author":1,"featured_media":2791,"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-2441","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: Cobalt Discovered By: Georg Brandt Year of Discovery: Around 1735 Category: Transition Metal Group: 9 (Group VIIIB \u2013 Transition Metals) State at Room Temperature: Solid (hard, silver-gray metal) \u2699\ufe0f Cobalt is a hard, magnetic, silver-gray metal used in batteries, magnets, paints, and even in your body. It&#039;s rare, useful, and\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Team ClassWork\"\/>\n\t<meta name=\"google-site-verification\" content=\"8E2CwmBfygQjWJcbOYdmmbNcCgBNAWjtD-yz1QQysCw\" \/>\n\t<meta name=\"keywords\" content=\"actinides,alkali metals,alkaline earth metals,atomic mass,atomic number,chemical elements,chemical symbols,chemistry basics,chemistry study guide,electron configuration,electronegativity,element groups,element periods,element properties,halogens,ionization energy,lanthanides,mendeleev periodic table,metalloids,noble gases,nonmetals,oxidation states,periodic table,periodic table elements,periodic table explained,periodic table facts,periodic table for students,periodic trends,science education,transition metals\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/2025\\\/06\\\/27\\\/cobalt-co\\\/#article\",\"name\":\"Cobalt (Co) | ClassWork\",\"headline\":\"Cobalt (Co)\",\"author\":{\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/author\\\/texnotesadmin\\\/#author\"},\"publisher\":{\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/#person\"},\"image\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/i0.wp.com\\\/texpertssolutions.com\\\/notes\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/32.png?fit=1280%2C720&ssl=1\",\"width\":1280,\"height\":720},\"datePublished\":\"2025-06-27T14:58:12+05:30\",\"dateModified\":\"2025-06-29T16:44:53+05:30\",\"inLanguage\":\"en-US\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/2025\\\/06\\\/27\\\/cobalt-co\\\/#webpage\"},\"isPartOf\":{\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/2025\\\/06\\\/27\\\/cobalt-co\\\/#webpage\"},\"articleSection\":\"Periodic Table for Students, actinides, alkali metals, alkaline earth metals, atomic mass, atomic number, chemical elements, chemical symbols, chemistry basics, chemistry study guide, electron configuration, electronegativity, element groups, element periods, element properties, halogens, ionization energy, lanthanides, Mendeleev periodic table, metalloids, noble gases, nonmetals, oxidation states, periodic table, periodic table elements, periodic table explained, periodic table facts, periodic table for students, periodic trends, science education, transition metals\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/2025\\\/06\\\/27\\\/cobalt-co\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/category\\\/periodic-table-for-students\\\/#listItem\",\"name\":\"Periodic Table for Students\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/category\\\/periodic-table-for-students\\\/#listItem\",\"position\":2,\"name\":\"Periodic Table for Students\",\"item\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/category\\\/periodic-table-for-students\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/2025\\\/06\\\/27\\\/cobalt-co\\\/#listItem\",\"name\":\"Cobalt (Co)\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/2025\\\/06\\\/27\\\/cobalt-co\\\/#listItem\",\"position\":3,\"name\":\"Cobalt (Co)\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/category\\\/periodic-table-for-students\\\/#listItem\",\"name\":\"Periodic Table for Students\"}}]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/#person\",\"name\":\"Team ClassWork\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/2025\\\/06\\\/27\\\/cobalt-co\\\/#personImage\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/facc1dbe260d7045db141528871a1d1294c47bb8883f2c37e197d7da9b59ae7b?s=96&d=mm&r=g\",\"width\":96,\"height\":96,\"caption\":\"Team ClassWork\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/author\\\/texnotesadmin\\\/#author\",\"url\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/author\\\/texnotesadmin\\\/\",\"name\":\"Team ClassWork\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/2025\\\/06\\\/27\\\/cobalt-co\\\/#authorImage\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/facc1dbe260d7045db141528871a1d1294c47bb8883f2c37e197d7da9b59ae7b?s=96&d=mm&r=g\",\"width\":96,\"height\":96,\"caption\":\"Team ClassWork\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/2025\\\/06\\\/27\\\/cobalt-co\\\/#webpage\",\"url\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/2025\\\/06\\\/27\\\/cobalt-co\\\/\",\"name\":\"Cobalt (Co) | ClassWork\",\"description\":\"\\ud83d\\udd39 Basic Information Element Name: Cobalt Discovered By: Georg Brandt Year of Discovery: Around 1735 Category: Transition Metal Group: 9 (Group VIIIB \\u2013 Transition Metals) State at Room Temperature: Solid (hard, silver-gray metal) \\u2699\\ufe0f Cobalt is a hard, magnetic, silver-gray metal used in batteries, magnets, paints, and even in your body. It's rare, useful, and\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/2025\\\/06\\\/27\\\/cobalt-co\\\/#breadcrumblist\"},\"author\":{\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/author\\\/texnotesadmin\\\/#author\"},\"creator\":{\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/author\\\/texnotesadmin\\\/#author\"},\"image\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/i0.wp.com\\\/texpertssolutions.com\\\/notes\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/32.png?fit=1280%2C720&ssl=1\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/2025\\\/06\\\/27\\\/cobalt-co\\\/#mainImage\",\"width\":1280,\"height\":720},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/2025\\\/06\\\/27\\\/cobalt-co\\\/#mainImage\"},\"datePublished\":\"2025-06-27T14:58:12+05:30\",\"dateModified\":\"2025-06-29T16:44:53+05:30\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/#website\",\"url\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/\",\"name\":\"ClassWork\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/texpertssolutions.com\\\/notes\\\/#person\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Cobalt (Co) | ClassWork","description":"\ud83d\udd39 Basic Information Element Name: Cobalt Discovered By: Georg Brandt Year of Discovery: Around 1735 Category: Transition Metal Group: 9 (Group VIIIB \u2013 Transition Metals) State at Room Temperature: Solid (hard, silver-gray metal) \u2699\ufe0f Cobalt is a hard, magnetic, silver-gray metal used in batteries, magnets, paints, and even in your body. It's rare, useful, and","canonical_url":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/","robots":"max-image-preview:large","keywords":"actinides,alkali metals,alkaline earth metals,atomic mass,atomic number,chemical elements,chemical symbols,chemistry basics,chemistry study guide,electron configuration,electronegativity,element groups,element periods,element properties,halogens,ionization energy,lanthanides,mendeleev periodic table,metalloids,noble gases,nonmetals,oxidation states,periodic table,periodic table elements,periodic table explained,periodic table facts,periodic table for students,periodic trends,science education,transition metals","webmasterTools":{"google-site-verification":"8E2CwmBfygQjWJcbOYdmmbNcCgBNAWjtD-yz1QQysCw","miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/#article","name":"Cobalt (Co) | ClassWork","headline":"Cobalt (Co)","author":{"@id":"https:\/\/texpertssolutions.com\/notes\/author\/texnotesadmin\/#author"},"publisher":{"@id":"https:\/\/texpertssolutions.com\/notes\/#person"},"image":{"@type":"ImageObject","url":"https:\/\/i0.wp.com\/texpertssolutions.com\/notes\/wp-content\/uploads\/2025\/06\/32.png?fit=1280%2C720&ssl=1","width":1280,"height":720},"datePublished":"2025-06-27T14:58:12+05:30","dateModified":"2025-06-29T16:44:53+05:30","inLanguage":"en-US","mainEntityOfPage":{"@id":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/#webpage"},"isPartOf":{"@id":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/#webpage"},"articleSection":"Periodic Table for Students, actinides, alkali metals, alkaline earth metals, atomic mass, atomic number, chemical elements, chemical symbols, chemistry basics, chemistry study guide, electron configuration, electronegativity, element groups, element periods, element properties, halogens, ionization energy, lanthanides, Mendeleev periodic table, metalloids, noble gases, nonmetals, oxidation states, periodic table, periodic table elements, periodic table explained, periodic table facts, periodic table for students, periodic trends, science education, transition metals"},{"@type":"BreadcrumbList","@id":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/texpertssolutions.com\/notes\/#listItem","position":1,"name":"Home","item":"https:\/\/texpertssolutions.com\/notes\/","nextItem":{"@type":"ListItem","@id":"https:\/\/texpertssolutions.com\/notes\/category\/periodic-table-for-students\/#listItem","name":"Periodic Table for Students"}},{"@type":"ListItem","@id":"https:\/\/texpertssolutions.com\/notes\/category\/periodic-table-for-students\/#listItem","position":2,"name":"Periodic Table for Students","item":"https:\/\/texpertssolutions.com\/notes\/category\/periodic-table-for-students\/","nextItem":{"@type":"ListItem","@id":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/#listItem","name":"Cobalt (Co)"},"previousItem":{"@type":"ListItem","@id":"https:\/\/texpertssolutions.com\/notes\/#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/#listItem","position":3,"name":"Cobalt (Co)","previousItem":{"@type":"ListItem","@id":"https:\/\/texpertssolutions.com\/notes\/category\/periodic-table-for-students\/#listItem","name":"Periodic Table for Students"}}]},{"@type":"Person","@id":"https:\/\/texpertssolutions.com\/notes\/#person","name":"Team ClassWork","image":{"@type":"ImageObject","@id":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/#personImage","url":"https:\/\/secure.gravatar.com\/avatar\/facc1dbe260d7045db141528871a1d1294c47bb8883f2c37e197d7da9b59ae7b?s=96&d=mm&r=g","width":96,"height":96,"caption":"Team ClassWork"}},{"@type":"Person","@id":"https:\/\/texpertssolutions.com\/notes\/author\/texnotesadmin\/#author","url":"https:\/\/texpertssolutions.com\/notes\/author\/texnotesadmin\/","name":"Team ClassWork","image":{"@type":"ImageObject","@id":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/#authorImage","url":"https:\/\/secure.gravatar.com\/avatar\/facc1dbe260d7045db141528871a1d1294c47bb8883f2c37e197d7da9b59ae7b?s=96&d=mm&r=g","width":96,"height":96,"caption":"Team ClassWork"}},{"@type":"WebPage","@id":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/#webpage","url":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/","name":"Cobalt (Co) | ClassWork","description":"\ud83d\udd39 Basic Information Element Name: Cobalt Discovered By: Georg Brandt Year of Discovery: Around 1735 Category: Transition Metal Group: 9 (Group VIIIB \u2013 Transition Metals) State at Room Temperature: Solid (hard, silver-gray metal) \u2699\ufe0f Cobalt is a hard, magnetic, silver-gray metal used in batteries, magnets, paints, and even in your body. It's rare, useful, and","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/texpertssolutions.com\/notes\/#website"},"breadcrumb":{"@id":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/#breadcrumblist"},"author":{"@id":"https:\/\/texpertssolutions.com\/notes\/author\/texnotesadmin\/#author"},"creator":{"@id":"https:\/\/texpertssolutions.com\/notes\/author\/texnotesadmin\/#author"},"image":{"@type":"ImageObject","url":"https:\/\/i0.wp.com\/texpertssolutions.com\/notes\/wp-content\/uploads\/2025\/06\/32.png?fit=1280%2C720&ssl=1","@id":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/#mainImage","width":1280,"height":720},"primaryImageOfPage":{"@id":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/cobalt-co\/#mainImage"},"datePublished":"2025-06-27T14:58:12+05:30","dateModified":"2025-06-29T16:44:53+05:30"},{"@type":"WebSite","@id":"https:\/\/texpertssolutions.com\/notes\/#website","url":"https:\/\/texpertssolutions.com\/notes\/","name":"ClassWork","inLanguage":"en-US","publisher":{"@id":"https:\/\/texpertssolutions.com\/notes\/#person"}}]}},"aioseo_meta_data":{"post_id":"2441","title":null,"description":null,"keywords":null,"keyphrases":{"focus":[],"additional":[]},"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":"","og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"Article","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":"-1","robots_max_videopreview":"-1","robots_max_imagepreview":"large","priority":null,"frequency":"default","location":null,"local_seo":null,"breadcrumb_settings":null,"limit_modified_date":false,"ai":null,"created":"2025-06-27 08:42:37","updated":"2026-10-21 04:06:34","focus_keyword":null,"additional_keywords":null,"truseo_locale":null,"seo_analyzer_scan_date":null},"jetpack_featured_media_url":"https:\/\/i0.wp.com\/texpertssolutions.com\/notes\/wp-content\/uploads\/2025\/06\/32.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\/2441","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=2441"}],"version-history":[{"count":1,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/posts\/2441\/revisions"}],"predecessor-version":[{"id":2513,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/posts\/2441\/revisions\/2513"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/media\/2791"}],"wp:attachment":[{"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/media?parent=2441"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/categories?post=2441"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/texpertssolutions.com\/notes\/wp-json\/wp\/v2\/tags?post=2441"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}