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Physical Properties of Technetium and Roentgenium

Technetium
Roentgenium
Physical Properties of Roentgenium and Technetium


Physical Properties
Melting Point
2,200.00 °C   
9
Not Available   
Boiling Point
4,877.00 °C   
7
Not Available   
Appearance
  
  
Physical State
Solid   
Solid   
Color
Shiny Gray   
Silver   
Luster
NA   
Unknown Luster   
Hardness
  
  
Speed of Sound
16,200.00 m/s   
1
Not Available   
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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