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Physical Properties of Thorium and Iridium

Thorium
Iridium
Physical Properties of Iridium and Thorium


Physical Properties
Melting Point
1,750.00 °C   
17
2,410.00 °C   
7
Boiling Point
4,790.00 °C   
8
4,527.00 °C   
10
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silver   
Silvery White   
Luster
NA   
Metallic   
Hardness
  
  
Mohs Hardness
3.00   
12
6.50   
5
Brinell Hardness
390.00 MPa   
29
1,670.00 MPa   
5
Vickers Hardness
295.00 MPa   
29
1,760.00 MPa   
3
Speed of Sound
2,490.00 m/s   
36
4,825.00 m/s   
13
Optical Properties
  
  
Reflectivity
Not Available   
78.00 %   
6
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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