neptunium
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UFP Historical Society
neptunium
UFP Historical Society
| Symbol | Np |
| Atomic Weight | 237 |
| Atomic Number | 93 |
| Discovered | 1940 |
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Neptunium, element 93, was discovered in the United States of America on Earth in 1940. The most stable isotope discovered had a mass of 237.[1]
Wikipedia
Notes and References
- ↑ Palestine, Eileen and Geoffrey Mandel (Authors). Star Fleet Medical Reference Manual. Star Trek. Book. Originally published by Star Fleet Productions, Inc. Ballantine Books. 1977.