Symbol Po Atomic radius: pm 118 Fusion: kJ/Mole -
Name Polonium Ionic radius: pm (+4)- Boiling point: C 962
Atomic number 84 Electron affinity 1.9 Melting point: C 254
Atomic weight 209.0 1st  ion potential 8.42 Specific Heat Cap: J/(g K) -
Classification Other metal Natural form Solid Thermal Cond: W/(cm K) 0.20
Configuration [Xe]4f145d106s2p4 Crystal structure Cubic Electrical Cond 0.0219
Oxidation states 2,4 Density 9.2 Abundance: mg/kg-crust <0.001
Electronegativity 2.0 Vaporization: kJ/Mole 101.0    
Polonium was discovered in 1898 by Pierre and Marie Curie. Uses -   thermoelectric power, source of neutrons, elimination of static charges in textile mills