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Np

  - Classification : metallic
  - Molecular Weight : 237.0482 g/mole
  - Density : alpha: 20.45, beta: 19.36, nu: 18.0 g/cm3
  - Melting Temperature : 630 ± 1, 278 ±5 stable 278-570 oC
  - Boiling Temperature : 3902 oC
  - Properties : silvery
  - Crystal Form : alpha: orthorhomb silvery, beta:tetra above 278, gamma: cubic above 500
  - Color : silvery metallic

Thermal Property List

Electric resistivity [ohm*cm] (7)
Specific heat capacity [J/molK] (3)
Enthalpy [J/mol] (2)
Thermal diffusivity [cm^2/sec] (1)
Thermal conductivity [W/cmK] (1)