Polonium

ElementPoloniumSymbolPo
Atomic Number84Molar Mass210 gmol-1
Electron Configuration[Xe]4f145d106s26p4Normal Statesolid metalloid
Density @STP9.4 g cm-3Melting Point254oC
Boiling Point962oCStable Isotopesnone
Atomic Radius167 pmIonic Radius65 (4+) pm
Electronegativity (Pauling)2Ionization Energy (1st)812 kJ mol-1
Ionization Energy (2nd)1800 kJ mol-1Ionization Energy (3rd)2700 kJ mol-1
Molar Heat CapacityJ K-1mol-1Standard Molar EntropyJ K-1mol-1
Enthalpy of Fusion10 kJ mol-1Enthalpy of Vapourization100.8 kJ mol-1
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