Symbol Sc Atomic radius: pm 161 Fusion: kJ/Mole 14.10
Name Scandium Ionic radius: pm (+3)75 Boiling point: C 2836
Atomic number 21 Electron affinity 0.19 Melting point: C 1541
Atomic weight 44.96 1st  ion potential 6.56 Specific Heat Cap: J/(g K) 0.57
Classification Trans metal Natural form Solid Thermal Cond: W/(cm K) 0.16
Configuration [Ar]3d14s2 Crystal structure Hex Electrical Cond 0.0177
Oxidation states 3 Density 2.99 Abundance: mg/kg-crust 22
Electronegativity 1.36 Vaporization: kJ/Mole 305.0    
Dimitri Mendeleev predicted the existence of scandium in 1871 as ekaboron.  Lars Fredrik Nolson discovered its oxide, scandia, in 1879, and Per Teodor Cleve identified scandium in 1879 with the hypothetical ekaboron. Uses - component of alloys used to make metallic baseball bats, isotope tracing in crude oil analysis