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.- Lecoq de Boisbaudran obtained a fairly pure sample in 1886.   Both men are given credit for the discovery of gadolinium. Uses - alloys, CD disks