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