Protactinium

Physical properties




Physical state @ 20°C: Solid
Color: Silvery metallic [3]
Luster: Metallic [3]
Molecular weight (g/mol): 231.0359 [1]
Melting point (°C): 1572 [1]
Boiling point (°C): 4722 (Approximately) [1]
Density (g/cm3): 15.37 [1]
Superconduction temp. (K): 1.4 [3]