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Physical Properties of Lead and Thallium


Physical Properties of Thallium and Lead


Physical Properties

Melting Point
327.50 °C   
99+
303.50 °C   
99+

Boiling Point
1,740.00 °C   
99+
1,457.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Gray   
Silvery White   

Luster
Metallic   
NA   

Hardness
  
  

Mohs Hardness
1.50   
18
1.20   
20

Brinell Hardness
38.00 MPa   
99+
26.50 MPa   
99+

Speed of Sound
1,190.00 m/s   
99+
818.00 m/s   
99+

Optical Properties
  
  

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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