Symbol Y Atomic radius: pm 178 Fusion: kJ/Mole 11.4
Name Yttrium Ionic radius: pm (+3)102 Boiling point: C 3345
Atomic number 39 Electron affinity 0.31 Melting point: C 1522
Atomic weight 88.91 1st  ion potential 6.22 Specific Heat Cap: J/(g K) 0.30
Classification Trans metal Natural form Solid Thermal Cond: W/(cm K) 0.17
Configuration [Kr]4d15s2 Crystal structure Hex Electrical Cond 0.0166
Oxidation states 3 Density 4.47 Abundance: mg/kg-crust 33
Electronegativity 1.22 Vaporization: kJ/Mole 393.0    
Yttrium was discovered in 1794 by Johann Gadolin. Uses - YAG laser, TV phosphor, production of microwave filters, production of simulated diamonds