Neptunium (Np)

Atomic number:   93
Symbol:   Np
Atomic weight:   237
Boiling Point (C):   --
Melting Point (C):   637
Density:   19.5
heatVapor:   94.3
heatFusion:   --
Electrical Conductivity:   --
Thermal Conductivity:   --
Specific Heat Capacity:   --

Go back to the elements page.