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Physical Properties of Iridium and Gold

Iridium
Gold
Physical Properties of Gold and Iridium


Physical Properties
Melting Point
2,410.00 °C   
7
1,064.43 °C   
99+
Boiling Point
4,527.00 °C   
10
2,807.00 °C   
36
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery White   
Gold   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
6.50   
5
2.50   
14
Brinell Hardness
1,670.00 MPa   
5
194.00 MPa   
99+
Vickers Hardness
1,760.00 MPa   
3
216.00 MPa   
31
Speed of Sound
4,825.00 m/s   
13
2,030.00 m/s   
99+
Optical Properties
  
  
Reflectivity
78.00 %   
6
95.00 %   
2
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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