Periodic Table -> Astatine

Astatine

Astatine Details

Astatine Symbol: At

Astatine Atomic Number: 85

Astatine Atomic Weight: (210)

What is Astatine?
Radioactive halogen element. Occurs naturally from uranium and thorium decay. At least 20 known isotopes. At-210, the most stable, has a half-life of 8.3 hours. Synthesized by nuclear bombardment in 1940 by D.R. Corson, K.R. MacKenzie and E. Segre at the University of California.

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