Physical Properties of Tantalum and Europium
Boiling Point
1,597.00 °C
  
99+
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Gray Blue
  
Silvery White
  
Luster
Metallic
  
Lustrous
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
Not Available
  
Speed of Sound
3,400.00 m/s
  
22
Not Available
  
Optical Properties
  
  
Reflectivity
Not Available
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available