Neptunium
Physical properties
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Physical state @ 20°C:
Solid
Color:
Silvery [3]
Molecular weight (g/mol):
237.0482 [1]
Melting point (°C):
644 [1]
Boiling point (°C):
3902 (Approximately) [1]
Density (g/cm
3
):
α-form: 20.45 [3,4]
β-form: 19.36 [3,4]
γ-form: 18.0 [3]
Elastic properties:
Young's modulus (GPa):
Bulk modulus (GPa):
80 [2]
118 [2]