Given below are two statements : Statement I: The metallic radius of Al is less than that of Ga. Statement II: The ionic radius of Al3+ is less than that of Ga3+. In the light of the above statements,

Question

Given below are two statements : Statement I: The metallic radius of Al is less than that of Ga. Statement II: The ionic radius of Al3+ is less than that of Ga3+. In the light of the above statements, choose the most appropriate answer from the options given below :

(A) Statement I is correct but Statement II is incorrect
(B) Both Statement I and Statement II are incorrect
(C) Both Statement I and Statement II are correct
(D) Statement I is incorrect but Statement II is correct

Prashant Kotian · Accepted Answer

Correct answer: D. rAl > rGa (due to poor shielding of nuclear charge by 3d e–)  Al r <  Ga r follows regular trend (shell   r)

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