Erbium

Properties

Atomic Number

68

Atomic Symbol

Er

Atomic Mass

167.259

CAS No.

7440-52-0

Density

9.066 g/cm³

Series

lanthanoid

Melting Point

1,497°C

Boiling Point

2,868°C

Thermal Conductivity

0.15 W/cm °C

Heat of Fusion

19.9 kJ/mol

Heat of Vaporization

285 kJ/mol

Electronegativity

1.24 pauling

Crystal Structure

Hexagonal

Electrical Conductivity

1.2×10⁶ S/m