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Physical Properties of Promethium and Terbium


Physical Properties of Terbium and Promethium


Physical Properties

Melting Point
1,042.00 °C   
99+
1,356.00 °C   
33

Boiling Point
3,000.00 °C   
31
3,123.00 °C   
29

Appearance
  
  

Physical State
Solid   
Solid   

Color
Unknown   
Silvery White   

Luster
Metallic   
Metallic   

Hardness
  
  

Brinell Hardness
Not Available   
677.00 MPa   
17

Vickers Hardness
Not Available   
863.00 MPa   
13

Speed of Sound
Not Available   
2,620.00 m/s   
35

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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