* Indium is a member of the main group metals family:
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INDIUM / In / 49
A soft, silvery metal with a low melting point and moderate
resistance to corrosion. Two isotopes are found in nature:
In<115/49> (96%), which is weakly radioactive with a half-life
of 6E14 years, and In<113/49> (4%), which is stable.
atomic weight: 114.818
abundance: 69th
density: 7.31 gm/cc
melting point: 157 C
boiling point: 2,080 C
valence: 1 2 3
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Indium is fairly scarce, with production in some tens of tonnes a year, and the metal has few applications. It is used to create low-melting-point alloys for sprinkler and fire alarm systems. It is toxic in moderate quantities.
