The correct order of atomic radii in group 13 elements is
B<Ga<Al<Tl<InB < Ga < Al < Tl < InB<Ga<Al<Tl<In
B<Al<Ga<In<TlB < Al < Ga < In < TlB<Al<Ga<In<Tl
B<Al<In<Ga<TlB < Al < In < Ga < TlB<Al<In<Ga<Tl
B<Ga<Al<In<TlB < Ga < Al < In < TlB<Ga<Al<In<Tl
Based on atomic radii values (pm): B(85), Ga(135), Al(143), In(167), Tl(170). The correct order is B<Ga<Al<In<TlB < Ga < Al < In < TlB<Ga<Al<In<Tl.
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