Rubidium

Properties

Atomic Number

37

Atomic Symbol

Rb

Atomic Mass

85.4678

CAS No.

7440-17-7

Density

1.532 g/cm³

Series

alkali metal

Melting Point

39.31°C

Boiling Point

688°C

Thermal Conductivity

0.58 W/cm °C

Heat of Fusion

2.19 kJ/mol

Heat of Vaporization

71 kJ/mol

Electronegativity

0.82 pauling

Crystal Structure

Cubic

Electrical Conductivity

8.3×10⁶ S/m