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Physical Properties of Rubidium and Lanthanum

Rubidium
Lanthanum
Physical Properties of Lanthanum and Rubidium


Physical Properties
Melting Point
38.89 °C   
99+
920.00 °C   
99+
Boiling Point
688.00 °C   
99+
3,469.00 °C   
18
Appearance
  
  
Physical State
Solid   
Solid   
Color
Grayish White   
Silvery White   
Luster
NA   
NA   
Hardness
  
  
Mohs Hardness
0.30   
24
2.50   
14
Brinell Hardness
0.22 MPa   
99+
350.00 MPa   
30
Vickers Hardness
Not Available   
360.00 MPa   
26
Speed of Sound
1,300.00 m/s   
99+
2,475.00 m/s   
37
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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