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Physical Properties of Praseodymium and Rubidium

Praseodymium
Rubidium
Physical Properties of Rubidium and Praseodymium


Physical Properties
Melting Point
935.00 °C   
99+
38.89 °C   
99+
Boiling Point
3,130.00 °C   
27
688.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Grayish White   
Grayish White   
Luster
Metallic   
NA   
Hardness
  
  
Mohs Hardness
Not Available   
0.30   
24
Brinell Hardness
481.00 MPa   
24
0.22 MPa   
99+
Vickers Hardness
400.00 MPa   
25
Not Available   
Speed of Sound
2,280.00 m/s   
40
1,300.00 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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