Physical Properties of Holmium and Chromium
Melting Point
1,461.00 °C
  
30
1,857.00 °C
  
14
Boiling Point
2,600.00 °C
  
99+
2,672.00 °C
  
39
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery White
  
Silver
  
Luster
Metallic
  
Metallic
  
Hardness
  
  
Mohs Hardness
Not Available
  
Vickers Hardness
1,060.00 MPa
  
10
Speed of Sound
2,760.00 m/s
  
30
5,940.00 m/s
  
5
Optical Properties
  
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available