Stable isotope Indium (In)

Isotope Z(p) N(n) Atomic Mass Natural Abundance Enrichment Level Chemical Form
In-113 49 64 112.904062 4.29% >93.00% Metal
In-115 49 66 114.903879 95.71% 99.99% Metal

Properties of Indium

Name Indium
Symbol In
Atomic number 49
Atomic weight 114.82
Standard state Solid at 298 °K
CAS Registry ID 7440-74-6
Group in periodic table 13
Group name None
Period in periodic table 5
Block in periodic table p-block
Color Silvery lustrous gray
Classification Metallic
Melting point 156.6 °C
Boiling point 2080 °C
Thermal conductivity 81.8 W/(m·K) at 298.2 °K
Electrical resistivity 8.37 µΩ·cm at 20 °C
Electronegativity 1.7
Specific heat 0.24 kJ/kg K
Heat of vaporization 53.7 kJ·mol-1 at 2080 °C
Heat of fusion 0.781 kJ·mol-1 mole
Density of liquid 7.02 g/cm3 at 156.6 °C
Density of solid 7.31 g/cm
Electron configuration [Kr]4d105s25p
Oxidation states +1, +2, +3
Most common oxidation state +3