Astatine
Astatine is a member of the halogen family, the elements that make up Group 17 of the periodic table. Its atomic number is 85, its atomic mass is 209.9871, and its chemical symbol is At.
Prop...
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Astatine
Most students of chemistry study the first four members of the halogen family-- fluorine, chlorine, bromine, and iodine --but hear little or nothing about the last member, astatine. Chemists ...
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Astatine
Symbol
At
Atomic Number
85
Atomic Mass
209.9871
Family
Group 17 (Viia) Halogen Pronunciation
AS-tuh-teen
Overview
Astatine is a member of the halogen family, elements in Group 17 (VIIA) of t...
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Astatine
Astatine
Astatine