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== Properties == | == Properties == | ||
Americium, a member of the [[actinides]], is a silver-white [[metal]]. | Americium, a member of the [[actinides]], is a silver-white [[metal]]. With an [[atomic number]] of ninety-five and a mass number of two hundred forty-three, this element only occurs in unstable, [[radioactive]] isotopes. | ||
== Occurrences == | == Occurrences == |
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