Physical Properties of Beryllium and Rubidium
Melting Point
1,278.00 °C
  
36
Boiling Point
2,970.00 °C
  
32
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
White Gray
  
Grayish White
  
Luster
Metallic
  
NA
  
Hardness
  
  
Vickers Hardness
1,670.00 MPa
  
4
Not Available
  
Speed of Sound
12,890.00 m/s
  
2
1,300.00 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