Indium

CAS Number: 7440-74-6. Indium is a very soft, silvery-white metal
with a brilliant lustre. The pure metal gives a high-pitched
"scream" when bent. It is useful for making low-melting alloys.
When plated or evaporated onto glass, it forms a mirror as good
as that formed by silver, but with superior resistance to
atmospheric corrosion. Indium is a byproduct of the formation of
lead and zinc. Indium metal is isolated by the electrolysis of
indium salts in water. Chemical formula = In. Molecular weight =
114.82 g/mol.