neptunium
(nep-tu-ni-um)
4 syllables
Definition
symbolNp; atomic number93; a transuranic element produced in nuclear reactors by the neutron bombardment of U238; decays rapidly to plutonium and then to U235
Example Sentence
Neptunium is a chemical element with the symbol Np and atomic number 93.
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neptunium
Rhymes
- neptunium