astatine: Quick Facts

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Facts

Also Known As	At

Photos

A labeled diagram of the periodic table entry for astatine shows its atomic number 85, symbol At, atomic weight 210, electron configuration, and that it is a solid halogen at 20 degrees Celsius.

Radioactive decay of At-211

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Topics

astatine 211 What Is Astatine Used For?chemical element halogen hydrogen carbon sodium nitrogen sulfur phosphorus boron iodine fluorine zinc

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halogen: Introduction

Key People

Emilio Segrè

Emilio Segrè

Italian-American physicist

Periodic Table of the elements concept image (chemistry)

Facts You Should Know: The Periodic Table Quiz

Concept artwork on the periodic table of elements.

118 Names and Symbols of the Periodic Table Quiz