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Physical Properties of Protactinium and Iron

Protactinium
Iron
Physical Properties of Iron and Protactinium


Physical Properties
Melting Point
1,568.00 °C   
21
1,535.00 °C   
25
Boiling Point
4,027.00 °C   
12
2,750.00 °C   
37
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silver   
Gray   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
4.00   
10
Brinell Hardness
Not Available   
200.00 MPa   
40
Vickers Hardness
Not Available   
608.00 MPa   
18
Speed of Sound
Not Available   
5,120.00 m/s   
8
Optical Properties
  
  
Reflectivity
Not Available   
65.00 %   
12
Allotropes
No   
Yes   
α Allotropes
Not Available   
Ferrite (alpha Iron)   
β Allotropes
Not Available   
beta Iron   
γ Allotropes
Not Available   
gamma Iron   
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