Jump to: navigation, search

Astatine

Discovery

Discovered by Dale R. Carson, K.R. Mackenzie, and Emilio Serge in 1940. They bombarded an isotope of bismuth with alpha particles accelerating a device called cyclotron. Conducted at the University of California.

References

http://education.jlab.org/itselemental/ele085.html

Unknown extension tag "references"



Do you see an error on this page? Please create an account and help us edit this page. Your help is greatly appreciated.


Element Info

Symbol: At

Atomic Number: 85

Atomic Weight: 210

Melting Point: 575 K (302°C or 576°F)

Boiling Point: Unknown

Density: about 7 grams per cubic centimeter

Phase at Room Temperature: Solid

Element Classification: Semi-metal

Period Number: 6

Group Number: 17

Name Origin: From the Greek word for unstable, astatos.