actinium
Noun
Meaning
A supposed metal, said by Phipson to be contained in commercial zinc; -- so called because certain of its compounds are darkened by exposure to light.
Source: Webster's dictionarySynonyms
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Actinium has a market cap of $176,494.90 and $507,026.00 worth of Actinium was traded on exchanges in the last 24 hours.
Actinium Pharmaceuticals, Inc. is a clinical-stage biopharmaceutical company developing ARCs or Antibody Radiation-Conjugates, which combine the targeting ability of antibodies with the cell killing ability of radiation.
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.
Another danger of actinium is that it undergoes radioactive decay faster than being excreted.
Golub, p. 213 citation Owing to the close similarity of actinium and lanthanum and low abundance, pure actinium could only be produced in 1950.
Hammond, C. R. The Elements in Applications Owing to its scarcity, high price and radioactivity, actinium currently has no significant industrial use.