Physical Properties of Berkelium and Cerium
Boiling Point
2,627.00 °C
  
40
3,257.00 °C
  
23
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silver
  
Silvery White
  
Luster
Metallic
  
Lustrous
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
Not Available
  
186.00 MPa
  
99+
Vickers Hardness
Not Available
  
Speed of Sound
Not Available
  
2,100.00 m/s
  
99+
Optical Properties
  
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available