Indium
Indium
Indium, In, is a soft silver main group element, found in
Group IIIb of the
periodic table.
- Atomic Number : 49
- Relative Atomic Mass : 114.82
- Melting Point is 156.6 degC
- Boiling Point is 2080 degC
- Relative Density is 7.31
Indium, In, is an electron acceptor.
Discovery
Indium, In, was discovered by T Reich and F Richter in 1863AD.
Occurrence
Indium is widely distributed in the ores of tin.
Indium occurs in the mineral Cylindrite from Bolivia, which
contains up to 1.0% indium.
Extraction
Indium is isolated from the litharge, which is formed by the
lead content of zinc ores during the refining of that ores.
Properties
Indium is a soft metal with a low melting point.
Uses
Indium is used to electroplate lead alloys used in bearings to
protect them against attack by lubricants.
Indium is used in the semi-conductor industry in the
manufacture of diodes and transistors.
Detection and Analysis
Indium is identified by the characteristic indigo blue line in
its emission spectrum, which is responsible for its name.
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