Physical Properties of Praseodymium and Curium
Melting Point
1,340.00 °C
  
34
Boiling Point
3,130.00 °C
  
27
3,110.00 °C
  
30
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Grayish White
  
Silver
  
Luster
Metallic
  
Metallic
  
Hardness
  
  
Brinell Hardness
Not Available
  
Vickers Hardness
Not Available
  
Speed of Sound
2,280.00 m/s
  
40
Not Available
  
Optical Properties
  
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available