Symbol Rh Atomic radius: pm 135 Fusion: kJ/Mole 26.59
Name Rhodium Ionic radius: pm (+3)67 Boiling point: C 3695
Atomic number 45 Electron affinity 1.14 Melting point: C 1964
Atomic weight 102.9 1st  ion potential 7.46 Specific Heat Cap: J/(g K) 0.24
Classification Trans metal Natural form Solid Thermal Cond: W/(cm K) 1.50
Configuration [Kr]4d85s1 Crystal structure FCC Electrical Cond 0.211
Oxidation states 2,3,4 Density 12.4 Abundance: mg/kg-crust 0.001
Electronegativity 2.28 Vaporization: kJ/Mole 495.4    
Rhodium was discoverd in 1803 by William Wollaston. Uses - catalysts, electrical contacts, optical instruments, jewelry, part of the catalytic convertor system in cars