Physical Properties of Darmstadtium and Thulium
Melting Point
Not Available
  
1,545.00 °C
  
23
Boiling Point
Not Available
  
1,730.00 °C
  
99+
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Unknown
  
Silvery Gray
  
Luster
Unknown Luster
  
Metallic
  
Hardness
  
  
Brinell Hardness
Not Available
  
Vickers Hardness
Not Available
  
Speed of Sound
5,090.00 m/s
  
9
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