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Vera_Pavlovna [14]
3 years ago
13

Which describes an atom of actinium?

Chemistry
2 answers:
Andreyy893 years ago
5 0

Answer: It defines a  A soft, silvery-white radioactive metal

Explanation: Hope that helps

Basile [38]3 years ago
3 0

Answer:

Actinium is a chemical element with the symbol Ac and atomic number 89. 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.

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