Neptunium (Np) Element
| Basic Information | |
| Name: Neptunium Symbol: Np Atomic Number: 93 Atomic Mass: (237.0) amu Melting Point: 640.0 ＜C (913.15 ＜K, 1184.0 ＜F) Boiling Point: 3902.0 ＜C (4175.15 ＜K, 7055.6 ＜F) |
Number
of Protons/Electrons: 93 Number of Neutrons: 144 Classification: Rare Earth Crystal Structure: Orthorhombic Density @ 293 K: 20.45 g/cm3 Color: Unknown |
