Periodic Table of Elements showing Samerium lanthanide elements


Atomic Number62
Molar Mass150.35 gmol-1
Electron Configuration[Xe]4f66s2
Normal Statesolid metal
Density @STP7.54 g cm-3
Melting Point1074oC
Boiling Point1794oC
Stable Isotopes144Sm, 147Sm, 149Sm, 150Sm, 152Sm, 154Sm
Atomic Radius180 pm
Ionic Radius100 (3+) pm
Electronegativity (Pauling)1.17
Ionization Energy (1st)543 kJ mol-1
Ionization Energy (2nd)1068 kJ mol-1
Ionization Energy (3rd)2260 kJ mol-1
Molar Heat Capacity29.5 J K-1mol-1
Standard Molar Entropy69.6 J K-1mol-1
Enthalpy of Fusion10.9 kJ mol-1
Enthalpy of Vapourization191.6 kJ mol-1
[Back to Periodic table]

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