93
Np
Neptunium
Series: Actinide
Mass: 237.0482 g·mol−1 (mass of most stable isotope)
Discovered: 1940
Melting Point: 639.85 C (913 K)
Boiling Point: 3999.85 C (4273 K)
View pictures of Neptunium at the Wooden Periodic Table.
Read about Neptunium on Wikipedia.

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Copyright 2008 Mark Ivey. Based on data retrieved from Wikipedia.

Sat Sep 12 17:41:34 2015