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Q. General Characteristics of elements of Group 13?
All the elements of Group 13 have similar valence shell electronic configuration of ns2np1, but the underlying core varies. For B and Al, it is the preceding noble gas core, for Ga and In, it is noble gas plus dl0 and for TI, noble gas plus 4f145d10. This variation in the electronic configuration of the core is also reflected in the ionisation energies of these elements and has a strong influence on their properties.
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