Physical Properties of Lutetium and Francium
Melting Point
1,652.00 °C
  
19
Boiling Point
3,402.00 °C
  
19
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery White
  
NA
  
Luster
Metallic
  
NA
  
Hardness
  
  
Brinell Hardness
Not Available
  
Vickers Hardness
1,160.00 MPa
  
8
Not Available
  
Speed of Sound
Not Available
  
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