Actinium - Wikipedia
A soft, silvery-white radioactive metal, actinium reacts rapidly with oxygen and moisture in air forming a white coating of actinium oxide that prevents further oxidation. As with most lanthanides and many actinides, actinium assumes oxidation state +3 in nearly all its chemical compounds.
Actinium | Radioactive, Decay, Alpha Particles | Britannica
Actinium (Ac), radioactive chemical element, in Group 3 (IIIb) of the periodic table, atomic number 89. Actinium was discovered (1899) by French chemist André-Louis Debierne in pitchblende residues left after French physicists Pierre and Marie Curie had extracted radium from them, and it …
Actinium Element: Symbol, Properties, Uses - GeeksforGeeks
2024年4月24日 · Actinium is a rare and highly radioactive element. It is denoted by the symbol Ac and has an atomic number of 89. Actinium is the first element of the actinide series in the periodic table. It occurs naturally in uranium and thorium ores. It …
Actinium - Element information, properties and uses | Periodic …
Actinium is a soft, silvery-white radioactive metal. It glows blue in the dark because its intense radioactivity excites the air around it. Actinium is a very powerful source of alpha rays, but is rarely used outside research. Actinium has no known biological role. It is toxic due to its radioactivity.
Actinium | History, Uses, Facts, Physical & Chemical Characteristics
Actinium is a radioactive metal. It is the third element in row 7 of the periodic table. It is considered often as the first of the actinides, a group of “inner transition metals”. Quite recently discovered, it has been a useful metal in laboratory research over the past century.
Actinium Facts - Element 89 or Ac - ThoughtCo
2019年12月5日 · Actinium is the radioactive element that has atomic number 89 and element symbol Ac. It was the first non-primordial radioactive element to be isolated, although other radioactive elements had been observed before actinium.
Actinium Facts, Symbol, Discovery, Properties, Uses - Chemistry …
A radioactive metal, actinium (pronounced as ak-TIN-ee-em) belongs to the family of actinide metals and denoted by the chemical symbol Ac [1]. It has 29 isotopes out of which actinium-227 is the most stable one, having a half-life of 21.17 years. After which, it either undergoes alpha decay into francium-223, or beta decay into thorium-227 [3].
Actinium Element Facts - chemicool.com
Actinium is highly radioactive. Characteristics: Actinium is radioactive; it glows in the dark. Uses of Actinium. Actinium is used as a source of neutrons. Abundance and Isotopes. Abundance Earth’s Crust: 0.0005 parts per trillion by weight. Abundance Solar System: negligible. Cost, pure: $ per 100g. Cost, bulk: $ per 100g. Source: Natural U ...
Actinium (Ac) - Definition, Preparation, Properties, Uses
2024年7月11日 · Actinium is a soft, silvery-white radioactive metallic element that showcases unique properties and specialized applications, with the atomic number 89. Actinium is known for its strong radioactivity, making it stand out among elements.
Actinium (Ac): Uses, Properties, and Safety - The Ultimate Guide
Explore the comprehensive guide on actinium, a radioactive element with crucial industrial and medical applications. Learn about its history, physical and chemical properties, uses in radiation therapy for cancer, safety precautions, and fascinating facts.
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