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Physical Properties of Thorium and Thallium


Physical Properties of Thallium and Thorium


Physical Properties

Melting Point
1,750.00 °C   
17
303.50 °C   
99+

Boiling Point
4,790.00 °C   
8
1,457.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silver   
Silvery White   

Luster
NA   
NA   

Hardness
  
  

Mohs Hardness
3.00   
12
1.20   
20

Brinell Hardness
390.00 MPa   
29
26.50 MPa   
99+

Vickers Hardness
295.00 MPa   
29
Not Available   

Speed of Sound
2,490.00 m/s   
36
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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