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HOME > Protocols > Reference Material > Periodic Table > Neptunium
Neptunium

Atomic Number: 93

Name: Neptunium

Atomic symbol: Np

Atomic Weight: 237.048

Electron configuration: 1s22s22p63s23p63d104s24p64d105s25p64f145d105f46s26p66d17s2

Melting Point: 640oC

Boiling Point: 3902oC

Ionic radius: 1.10 angstroms (+3); 0.95 angstroms (+4); 0.71 angstroms (+7)

Previous: Atomic Number 92 - Uranium


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