Neptunium
Atomic No:
93
Name:
Neptunium  [nep'tjʊ:niəm]
Formula:
Np
Molar Mass:
237

Neptunium element has 93 protons, 144 neutrons and 93 electrons. Neptunium is a radioactive solid metal at room temperature. The melting point of Neptunium metal is 639 ̊C.

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