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Explore Element
Element: Neptunium
Symbol:
Np
CPK Color:
Atomic Number:
93
Atomic Mass:
237.048172
Electron Configuration:
[Rn]7s2 5f4 6d1
Electron Configuration (Drawing):
[Rn]
Atomic Radius:
221
Ionization Energy:
6.266
Electron Affinity:
Oxidation States:
Standard State:
Solid
Melting Point:
917 c
Boiling Point:
4175 c
Density:
20.25
Group Block:
Actinide
Year Discovered:
1940
Minerals Containing Neptunium
Mineral Name
IMA Chemistry
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