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Class 11thChemistry NCERT Exemplar Solutions Class 11th Chapter ElevenThe P Block ElementsThe p-Block ElementsChemistry

In the following questions two or more options may be correct.

16. The reason for small radius of Ga compared to Al is

(A) Poor screening effect of d and f orbitals

(B) Increase in nuclear charge

(C) Presence of higher orbitals

(D) Higher atomic numbeR

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1 Answer
A
8 months ago

This is a Multiple Choice Questions as classified in NCERT Exemplar

(A) & (B)

The atomic radii decrease as one moves down the group from Al to Ga due to the shielding effect of electrons. As a result of this ineffective effect, the effective nuclear charge rises.

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Chemistry NCERT Exemplar Solutions Class 11th Chapter Eleven 2025

Chemistry NCERT Exemplar Solutions Class 11th Chapter Eleven 2025

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