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Neptunium Np Rn 5f 6d 7s Pm U

Z 93
Symbol Np
Name Neptunium
Period 7
Atomic mass Scalar [237]
Density Scalar 20450
Melting point Scalar 913.15
Boiling point Scalar 4273
Electronegativity Scalar 1.36
Abundance <0.001
Ionisation energy Scalar 6.2657
Atomic radius Scalar 175
Electron configuration [Rn] 5f4 6d1 7s2
Top neighbor Pm
Left neighbor U
Right Neighbor Pu
German name Neptunium

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