Definition: Astatine is the name for the element with atomic number 85 and is represented by the symbol At.
It is a member of the halogen group.
It is a member of the halogen group.
Astatine Definition
By Anne Marie Helmenstine, Ph.D., About.com Guide
Astatine possesses characteristics common to other halogens, except with more metallic properties.
Justin UrgitisChemistry Glossary and Dictionary
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