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Physical Properties of Polonium and Hafnium


Physical Properties of Hafnium and Polonium


Physical Properties

Melting Point
254.00 °C   
99+
2,150.00 °C   
10

Boiling Point
962.00 °C   
99+
5,400.00 °C   
5

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silver   
Gray   

Luster
NA   
Metallic   

Hardness
  
  

Mohs Hardness
Not Available   
5.50   
7

Brinell Hardness
Not Available   
1,450.00 MPa   
6

Vickers Hardness
Not Available   
1,520.00 MPa   
5

Speed of Sound
Not Available   
3,010.00 m/s   
27

Optical Properties
  
  

Allotropes
Yes   
No   

α Allotropes
α-polonium   
Not Available   

β Allotropes
β-polonium   
Not Available   

γ Allotropes
Not Available   
Not Available   

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