Potassium

Properties

Atomic Number

19

Atomic Symbol

K

Atomic Mass

39.0983

CAS No.

7440-09-7

Density

0.856 g/cm³

Series

alkali metal

Melting Point

63.38°C

Boiling Point

759°C

Thermal Conductivity

1 W/cm °C

Heat of Fusion

2.33 kJ/mol

Heat of Vaporization

76.9 kJ/mol

Electronegativity

0.82 pauling

Crystal Structure

Cubic

Electrical Conductivity

1.4×10⁷ S/m