Indium

Indium (In)

Atomic Number: 49
Atomic Weight: 114.82
Melting Point: 156.61
Boiling Point: 2000
Specific Gravity: 7.31
Valence(s): 1,2(?), or 3
Indium was discovered and isolated by Reich and Richter in 1863. Indium is usually found in nature in small amounts with sphalerite. Since indium is quite expensive, its use in industry is limited. It is often used in making metals with low melting temperatures. Indium is named after the bright indigo line in its spectrum. [LM] {RW}