Astatine atom
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Discovery [edit]
Astatine was discovered in University of California, Berkeley, USA by Dale R. Corson, K. R. MacKenzie, and Emilio Segre in 1940.
Quick Facts [edit]
Name: astatine atom
Symbol: At
Atomic Mass: 210 amu
Classification: group 7 (halogens)
Protons: 85
Electrons: 85
Neutrons: 125
Colour: unknown, predicted to be black
Discovery in: 1940
Density: unknown
Crystal Structure: unknown
Melting Point: 302 °C (575 K)
Boiling Point: 337 °C (610 K)
Common Uses: radiation therapy, medical uses
