Americium photograph

Americium

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Symbol Am
Atomic number 95
Atomic mass243 u
Electron configuration[Rn] 5f77s2
Discoverers Glenn T. Seaborg
Albert Ghiorso
Ralph A. James
Did you knowAmericium's most stable isotope, americium-243, has a half-life of about 7,370 years.
Date of Reg.
Date of Upd.
ID961552
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About Americium


Americium is a synthetic radioactive chemical element with the symbol Am and atomic number 95. It is a transuranic member of the actinide series, in the periodic table located under the lanthanide element europium, and thus by analogy was named after the Americas.

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