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Physical Properties of Platinum and Gold

Platinum
Gold
Physical Properties of Gold and Platinum


Physical Properties
Melting Point
1,772.00 °C   
16
1,064.43 °C   
99+
Boiling Point
3,827.00 °C   
15
2,807.00 °C   
36
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery White   
Gold   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
3.50   
11
2.50   
14
Brinell Hardness
300.00 MPa   
34
194.00 MPa   
99+
Vickers Hardness
400.00 MPa   
25
216.00 MPa   
31
Speed of Sound
2,800.00 m/s   
29
2,030.00 m/s   
99+
Optical Properties
  
  
Reflectivity
73.00 %   
8
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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