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Indium  SEE PERIODIC TABLE
see article  SEE FULL ARTICLE


Atomic Number49

Atomic SymbolIn

Atomic Weight114.818 amu

GroupOther Metal, 13

FormSolid

Density @ STP7.31 g/cm3

Melting Point156.60 °C (313.88 °F, 429.75 °K)

Boiling Point2072 °C (3761.6 °F, 2345.15 °K)

Heat of Fusion3.28 kJ/mol

Heat of Vaporization230 kJ/mol

First Ionization Potential5.78636 eV

Electronegativity (on Pauling scale1.78

Specific Heat Capacity0.233 J/g K

Ground State Electron Configuration5p1

Oxidation State(s)+3

Stable Isotopes and Natural Abundance on Earth113In, 4.3%; 115In, 95.7%

Selected Radioisotopes111In

Atomic Radius156 pm

Crystal StructureTetragonal

Discovered byReich; Richter, 1863

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