Potassium

Physical properties


Physical state @ 20°C: Solid [4]
Color: Silvery [4]
Molecular weight (g/mol): 39.0983(1) [2]
Melting point (°C): List of melting points 63.7 [2]
Boiling point (°C): List of boiling points 759 [2]
Density (g/cm3): Density list 0.856 [2]
Molar volume (cm3): 45.50 (20 °C) [3]
Elastic properties:
Rigidity modulus (GPa):
Bulk modulus (GPa):

1.30 [3]
3.1 [3]
Hardness:
Mineral hardness:

0.5 [3]
Vapour pressure (Pa): 13300 (171 °C) [4]