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
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
3.24
Evaporation Heat(kj/mol)
225.1
Thermal Conductivity(@25°C W/m K)
81.8
Debye Temperature
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
