{"id":2658,"date":"2025-06-27T16:49:59","date_gmt":"2025-06-27T11:19:59","guid":{"rendered":"https:\/\/texpertssolutions.com\/notes\/?p=2658"},"modified":"2025-06-29T16:44:50","modified_gmt":"2025-06-29T11:14:50","slug":"californium-cf","status":"publish","type":"post","link":"https:\/\/texpertssolutions.com\/notes\/2025\/06\/27\/californium-cf\/","title":{"rendered":"Californium (Cf)"},"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>: Californium<\/li>\n\n\n\n<li><strong>Discovered By<\/strong>: Stanley G. Thompson, Glenn T. Seaborg, Kenneth Street Jr., and Albert Ghiorso<\/li>\n\n\n\n<li><strong>Year of Discovery<\/strong>: 1950<\/li>\n\n\n\n<li><strong>Category<\/strong>: Actinide Series \/ Radioactive Metal<\/li>\n\n\n\n<li><strong>Group<\/strong>: Actinides (no formal group number)<\/li>\n\n\n\n<li><strong>State at Room Temperature<\/strong>: Solid \ud83e\uddca<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Californium is a <strong>synthetic radioactive element<\/strong> named after the state of <strong>California<\/strong> and the <strong>University of California, Berkeley<\/strong>, where it was discovered.<\/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>: Cf<\/li>\n\n\n\n<li><strong>Atomic Number<\/strong>: 98<\/li>\n\n\n\n<li><strong>Atomic Mass<\/strong>: ~251 u<\/li>\n\n\n\n<li><strong>Valency<\/strong>: +3 (most stable), +2<\/li>\n\n\n\n<li><strong>Electronic Configuration<\/strong>: [Rn] 5f\u00b9\u2070 7s\u00b2<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Californium forms <strong>Cf\u00b3\u207a ions<\/strong> and reacts slowly with oxygen, water, and acids, but not with alkalis. It is highly radioactive and must be handled with care.<\/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\">Californium was the <strong>sixth transuranic element<\/strong> to be synthesized. It&#8217;s produced in <strong>nuclear reactors or particle accelerators<\/strong> by bombarding <strong>curium<\/strong> with neutrons.<\/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><strong>Californium-252<\/strong> is a powerful <strong>neutron emitter<\/strong>, one of the strongest known! \ud83d\udca5<\/li>\n\n\n\n<li>Just 1 microgram of Cf-252 can release <strong>170 million neutrons per minute<\/strong><\/li>\n\n\n\n<li>It&#8217;s used to <strong>start up nuclear reactors<\/strong> and detect <strong>gold and silver in mines<\/strong><\/li>\n\n\n\n<li>Extremely <strong>expensive and rare<\/strong> \u2014 costs millions of dollars per gram \ud83d\udcb8<\/li>\n\n\n\n<li>Highly radioactive and <strong>glows faintly<\/strong> due to alpha decay \u2728<\/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<p class=\"wp-block-paragraph\">\u2714\ufe0f <strong>Neutron Source<\/strong>:<br>Used in <strong>neutron radiography<\/strong>, moisture gauges, and <strong>oil exploration<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2714\ufe0f <strong>Nuclear Reactor Starter<\/strong>:<br>Helps initiate <strong>chain reactions<\/strong> in nuclear reactors \u269b\ufe0f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2714\ufe0f <strong>Medical &amp; Scientific Research<\/strong>:<br>Used in <strong>cancer treatments<\/strong> and research involving <strong>neutron activation analysis<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2714\ufe0f <strong>Metal &amp; Mineral Detection<\/strong>:<br>Helps detect <strong>precious metals<\/strong> and analyze <strong>rock composition<\/strong> in mining<\/p>\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\">Californium is a <strong>powerful and rare synthetic element<\/strong> with <strong>significant uses in science, medicine, and industry<\/strong>. Though not found in everyday life, it plays a key role in <strong>nuclear research and technology<\/strong>. For students, it\u2019s a symbol of how advanced elements can make a huge impact, even in the smallest amounts. \u269b\ufe0f\ud83c\udf0d<\/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 Californium is a synthetic radioactive element named after the state of California and the University of California, Berkeley, where it was discovered. \ud83d\udd38 Chemical Properties Californium forms Cf\u00b3\u207a ions and reacts slowly with oxygen, water, and acids, but not with alkalis. It is highly radioactive and must be handled with care. \ud83d\udcd8&#8230;<\/p>\n","protected":false},"author":1,"featured_media":2771,"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-2658","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: Californium Discovered By: Stanley G. 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Seaborg, Kenneth Street Jr., and Albert Ghiorso Year of Discovery: 1950 Category: Actinide Series \/ Radioactive Metal Group: Actinides (no formal group number) State at Room Temperature: Solid \ud83e\uddca Californium is a synthetic radioactive element named after the state of California 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 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