Physical Properties of Copper and Thallium
Melting Point
1,084.62 °C
  
40
Boiling Point
2,562.00 °C
  
99+
1,457.00 °C
  
99+
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Copper
  
Silvery White
  
Luster
NA
  
NA
  
Hardness
  
  
Vickers Hardness
Not Available
  
Speed of Sound
3,810.00 m/s
  
19
818.00 m/s
  
99+
Optical Properties
  
  
Reflectivity
Not Available
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available