Periodic Table of Elements showing Gallium metal elements





Gallium

ElementGallium
SymbolGa
Atomic Number31
Molar Mass69.72 gmol-1
Electron Configuration[Ar]3d104s24p1
Normal Statesolid metal
Density @STP5.91 g cm-3
Melting Point30oC
Boiling Point2204oC
Stable Isotopes69Ga, 70Ga
Atomic Radius153 pm
Ionic Radius62 (3+) pm
Electronegativity (Pauling)1.81
Ionization Energy (1st)579 kJ mol-1
Ionization Energy (2nd)1979 kJ mol-1
Ionization Energy (3rd)2963 kJ mol-1
Molar Heat Capacity26.1 J K-1mol-1
Standard Molar Entropy40.8 J K-1mol-1
Enthalpy of Fusion5.59 kJ mol-1
Enthalpy of Vapourization256.1 kJ mol-1
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