Symbol | Pu | Atomic radius: pm | 151 | Fusion: kJ/Mole | 2.82 |
Name | Plutonium | Ionic radius: pm | (+4)86 | Boiling point: °C | 3228 |
Atomic number | 94 | Electron affinity | - | Melting point: °C | 640 |
Atomic weight | 244.0 | 1st ion potential | 6.06 | Specific Heat Cap: J/(g K) | - |
Classification | Trans metal | Natural form | Solid | Thermal Cond: W/(cm K) | 0.07 |
Configuration | [Rn]5f67s2 | Crystal structure | Mono | Electrical Cond | 0.00666 |
Oxidation states | 3,4,5,6 | Density | 19.7 | Abundance: mg/kg-crust | Synthetic |
Electronegativity | 1.3 | Vaporization: kJ/Mole | 344.0 | ||
Plutonium was first produced artificially in 1940 as the isotope plutonium-238 by Glenn T. Seaborg, Edwin M. McMillan, Joseph W. Kennedy, and Arthur C. Wahl. Later, traces were found in uranium ores where it was naturally produced. | Uses - weapon fuel, pacemakers |