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Physical Properties of Thulium and Calcium

Thulium
Calcium
Physical Properties of Calcium and Thulium


Physical
Melting Point
1,545.00 °C  
23
839.00 °C  
99+
Boiling Point
1,730.00 °C  
99+
1,484.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery Gray  
Gray  
Luster
Metallic  
-  
Hardness
  
  
Mohs Hardness
2.25  
16
1.75  
18
Brinell Hardness
471.00 MPa  
30
170.00 MPa  
99+
Vickers Hardness
520.00 MPa  
33
170.00 MPa  
99+
Speed of Sound
2,760.00 m/s  
99+
3,810.00 m/s  
26
Optical Properties
  
  
Refractive Index
1.60  
33
1.54  
35
Reflectivity
35.00 %  
34
60.00 %  
23
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
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