Indium
Symbol
In
Atomic Number
49
Atomic Weight
114.818
Element Classification
Discovered By
Ferdinand Reich, T. Richter
Discovery Date
1863 (Germany)
Name Origin
Latin: indicum (color indigo), the color it shows in a spectroscope.
Density (g/cc)
7.31
Melting Point (K)
429.32
Boiling Point (K)
2353
Appearance
Very soft, silvery-white metal
Atomic Radius (pm)
166
Atomic Volume (cc/mol)
15.7
Covalent Radius (pm)
144
Ionic Radius
81 (+3e)
Specific Heat
0.234
Fusion Heat (kJ/mol)
3.24
Evaporation Heat (kJ/mol)
225.1
Thermal Conductivity (@25°C W/m K)
81.8
Debye Temperature (K)
129.00
Pauling Negativity Number
1.78
First Ionizing Energy (kJ/mol)
558.0
Oxidation States
3
Electronic Configuration
[Kr] 4d10 5s2 5p1
Lattice Structure
Tetragonal(TET)
Lattice Constant
4.590
Lattice C/A Ratio
n/a
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