astatine

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astatine
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UFP Historical Society
Symbol At
Atomic Weight 210
Atomic Number 85
Discovered 1940
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Astatine, element 85, was discovered in the United States of America on Earth in 1940. The most stable isotope discovered had a mass of 210.[1]

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Notes and References

  1. ↑ Palestine, Eileen and Geoffrey Mandel (Editors). Star Fleet Medical Reference Manual. Star Trek. Book. Originally published by Star Fleet Productions, Inc.. Ballantine Books. 1977.
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