Physical Properties of Holmium and Praseodymium
Physical Properties
Melting Point
1,461.00 °C
30
935.00 °C
99+
Boiling Point
2,600.00 °C
99+
3,130.00 °C
27
Appearance
Physical State
Solid
Solid
Color
Silvery White
Grayish White
Luster
Metallic
Metallic
Hardness
Brinell Hardness
746.00 MPa
13
481.00 MPa
24
Vickers Hardness
481.00 MPa
23
400.00 MPa
25
Speed of Sound
2,760.00 m/s
30
2,280.00 m/s
40
Optical Properties
Allotropes
No
No
α Allotropes
Not Available
Not Available
β Allotropes
Not Available
Not Available
γ Allotropes
Not Available
Not Available
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