protactinium
From Trekipedia
protactiniuim
UFP Historical Society
| Symbol | Pa |
| Atomic Weight | 231 |
| Atomic Number | 91 |
| Discovered | 1917 |
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Protactinium, element 91, was discovered in Germany and England on Earth in 1917. The most stable isotope discovered had a mass of 231.[1]
Notes and References
- ↑ Palestine, Eileen and Geoffrey Mandel (Editors). Star Fleet Medical Reference Manual. Star Trek. Book. Originally published by Star Fleet Productions, Inc.. Ballantine Books. 1977.
