49

In

Indium
114.818 (3)
 Historical Information

Indium was discovered by Ferdinand Reich and Theodore Richter, who later isolated the metal. It was found and spectroscopically identified as a minor component in zincores. Until 1924, a gram or so constituted the world's supply of this element in isolated form. In fact, it is probably about as abundant as silver.

Basic Information Shells
  • Name:Indium
  • Symbol: In
  • Atomic number: 49
  • Atomic weight: 114.818 (3)
  • Standard state: solid at 298 K
  • Group in periodic table:13
  • Group name: none
  • Period in periodic table: 5
  • Block in periodic table: p-block
  • Classification: Metallic
 Indium
Uses Trivia
  • photocells
  • indium is used in solders
  • used to make low-melting alloys, alloyed with gallium

Indium is a very soft, silvery-white metal with a brilliant lustre. The pure metal gives a high-pitched "scream" when bent. It wets glass, as does gallium.