Actinium
Physical properties
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Physical state @ 20°C:
Solid [1]
Color:
Silvery-white [1]
Molecular weight (g/mol):
227.0278 [1,a]
Melting point (°C):
1051 [2]
Boiling point (°C):
3198 [2]
Density (g/cm
3
):
10.070
Molar volume (cm
3
):
22.55