Lead

ElementLeadSymbolPb
Atomic Number82Molar Mass207.19 gmol-1
Electron Configuration[Xe]4f145d106s26p2Normal Statesolid metal
Density @STP11.34 g cm-3Melting Point327.5oC
Boiling Point1749oCStable Isotopes204Pb, 206Pb, 207Pb, 208Pb
Atomic Radius175 pmIonic Radius132 (2+) pm
Electronegativity (Pauling)2.33Ionization Energy (1st)716 kJ mol-1
Ionization Energy (2nd)1450 kJ mol-1Ionization Energy (3rd)3082 kJ mol-1
Molar Heat Capacity26.4 J K-1mol-1Standard Molar Entropy64.8 J K-1mol-1
Enthalpy of Fusion5.121 kJ mol-1Enthalpy of Vapourization179.4 kJ mol-1
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