Mechanical Properties of Neptunium and Nihonium
Density
  
  
Density At Room Temperature
19.38 g/cm3
  
14
16.00 g/cm3
  
19
Tensile Strength
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available
  
Elasticity properties
  
  
Poisson Ratio
Not Available
  
Not Available
  
Other Mechanical Properties
Ductile
  
Unknown