Symbol	Gd	Atomic radius: pm	179	Fusion: kJ/Mole	10.0
Name	Gadolinium	Ionic radius: pm	(+3)105	Boiling point: °C	3273
Atomic number	64	Electron affinity	-	Melting point: °C	1313
Atomic weight	157.3	1st  ion potential	6.15	Specific Heat Cap: J/(g K)	0.24
Classification	Trans metal	Natural form	Solid	Thermal Cond: W/(cm K)	0.10
Configuration	[Xe]4f75d16s1	Crystal structure	Hex	Electrical Cond	0.00736
Oxidation states	3	Density	7.90	Abundance: mg/kg-crust	6.2
Electronegativity	1.20	Vaporization: kJ/Mole	312.0
J.C.G. Marignac separated gadolinium from the mineral samarskite in 1880, and P.-É Lecoq de Boisbaudran obtained a fairly pure sample in 1886.   Both men are given credit for the discovery of gadolinium.			Uses - alloys, CD disks