Scandium

ElementScandiumSymbolSc
Atomic Number21Molar Mass44.96 gmol-1
Electron Configuration[Ar]3d14s2Normal Statesolid metal
Density @STP2.99 g cm-3Melting Point1541oC
Boiling Point2836oCStable Isotopes45Sc
Atomic Radius164 pmIonic Radius83 (3+) pm
Electronegativity (Pauling)1.36Ionization Energy (1st)631 kJ mol-1
Ionization Energy (2nd)1235 kJ mol-1Ionization Energy (3rd)2389 kJ mol-1
Molar Heat Capacity25.5 J K-1mol-1Standard Molar Entropy34.6 J K-1mol-1
Enthalpy of Fusion15.9 kJ mol-1Enthalpy of Vapourization304.8 kJ mol-1
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