Name: Plutonium
Symbol: Pu
Atomic Number: 94
Atomic Mass: (244.0) amu
Melting Point: 639.5 °C (912.65 °K, 1183.1 °F)
Boiling Point: 3235.0 °C (3508.15 °K, 5855.0 °F)
Number of Protons/Electrons: 94
Number of Neutrons: 150
Crystal Structure: Monoclinic
Density @ 293 K: 19.84 g/cm3
Color: Unknown
Atomic Structure
![[Bohr Model of Plutonium]](b0094.gif) |
Number of Energy Levels: 7 First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 18 Fourth Energy Level: 32 Fifth Energy Level: 24 Sixth Energy Level: 8 Seventh Energy Level: 2 |
Isotopes
| Isotope | Half Life |
| Pu-236 | 2.87 years |
| Pu-237 | 45.2 days |
| Pu-238 | 87.7 years |
| Pu-239 | 24100.0 years |
| Pu-240 | 6560.0 years |
| Pu-241 | 14.4 years |
| Pu-242 | 375000.0 years |
| Pu-243 | 4.95 hours |
| Pu-244 | 8.0E7 years |
| Pu-245 | 10.5 hours |
| Pu-246 | 10.85 days |
Facts
Date of Discovery: 1940Discoverer: G.T. Seaborg
Name Origin: After the planet Pluto
Uses: bombs, nuclear reactors
Obtained From: some uranium ores, man-made
Information provided by: http://www.chemicalelements.com