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CGP EDU Academic Team
Published on: August 13, 2026
The correct order of atomic radii in group 13 elements is:
Text Solution
Verified by ExpertsThe correct answer is:
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B < Ga < AI < In < TI
Ga, TI, In have d- electrons, which are less efficient at shielding the nuclear charge than s and p electrons, Due to the poor shielding, the outer electron are firmly held by the nucleus, Therefore the size of atoms with d 10 shell are smaller than expected,
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