85

At

Astatine
[ 210 ]
 Historical Information

Astatine was discovered by Dale Corson, MacKenzie, Segre at 1940 in California, USA. Origin of name: from the Greek word "astatos" meaning "unstable".
Basic Information Shells
  • Name:Astatine
  • Symbol: At
  • Atomic number: 85
  • Atomic weight:[ 210 ]
  • Standard state: liquid at 298 K
  • Group in periodic table: 17
  • Group name:Halogen
  • Period in periodic table: 6
  • Block in periodic table: p-block
  • Classification: Non-metallic
 Astatine
Uses Trivia
  • It has no uses.

There are about 20 isotopes known, all of which are radioactive. Astatine is a halogen and possibly accumulates in the thyroid like iodine.