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Physical Properties of Calcium and Technetium

Calcium
Technetium
Physical Properties of Technetium and Calcium


Physical Properties
Melting Point
839.00 °C   
99+
2,200.00 °C   
9
Boiling Point
1,484.00 °C   
99+
4,877.00 °C   
7
Appearance
  
  
Physical State
Solid   
Solid   
Color
Gray   
Shiny Gray   
Luster
NA   
NA   
Hardness
  
  
Mohs Hardness
1.75   
17
Not Available   
Brinell Hardness
170.00 MPa   
99+
Not Available   
Speed of Sound
3,810.00 m/s   
19
16,200.00 m/s   
1
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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