Difference between revisions of "Promethium"
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Revision as of 04:29, October 15, 2012
Promethium | |
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Properties | |
Atomic symbol | Pm |
Atomic number | 61 |
Classification | Metallic |
Atomic mass | 145 amu |
Other Information | |
Date of discovery | 1945 |
Name of discoverer | J.A. Marinsky, L.E. Glendenin and C.D. Coryell |
Name origin | From Prometheus who stole the fire of the sky and gave it to mankind. |
Uses | Used in highly specialized miniature batteries. |
Obtained from | All the promethium originally present when the Earth formed has disappeared due to radioactive decay. Only very small trace amounts are found in uranium ores as a product of nuclear fission. |
Periodic Table of the Elements | ||||||||||||||||||||||||
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1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |||||||
*Lanthanides | 61
Pm 145 |
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**Actinides | ||||||||||||||||||||||||