95

Am

Americium
[ 243 ]
 Historical Information

Americium was was identified by Seaborg and others in 1944 as the result of successive neutron capture reactions by plutonium isotopes in a nuclear reactor.

Basic Information Shells
  • Name:Americium
  • Symbol: Am
  • Atomic number: 95
  • Atomic weight: [ 243 ]
  • Standard state: solid at 298 K
  • Group in periodic table:
  • Group name:Actinoid
  • Period in periodic table: 7
  • Block in periodic table: f-block
  • Classification: Metallic
 Americium
Uses Trivia
  • onization source for smoke detectors
  • Am-241 as a portable source of gamma rays

The lustre of freshly prepared americium metal is whiter and more silvery than plutonium or neptunium prepared in the same manner. Americium is a component of the smoke detector above.