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Physical Properties of Thorium and Potassium

Thorium
Potassium
Physical Properties of Potassium and Thorium


Physical Properties
Melting Point
1,750.00 °C   
17
63.65 °C   
99+
Boiling Point
4,790.00 °C   
8
774.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silver   
Silvery Gray   
Luster
NA   
NA   
Hardness
  
  
Mohs Hardness
3.00   
12
0.40   
23
Brinell Hardness
390.00 MPa   
29
0.36 MPa   
99+
Vickers Hardness
295.00 MPa   
29
Not Available   
Speed of Sound
2,490.00 m/s   
36
2,000.00 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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