Consider the following two statements
Statement I: Among Mg, Al, Mg²⁺, Al³⁺ the one having smallest size is Al³⁺
Statement II: En is having exceptionally high atomic radii among lanthanide elements
The correct answer is

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Statement I is incorrect but statement II is correct.

Both statement I and statement II are correct.

Statement I is correct but statement II is incorrect.

Both statement I and statement II are incorrect.

answer is A.

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Detailed Solution

As the magnitude of positive charge is highest on Al³⁺, this means that it has the smallest size. As the atomic radii increases in lanthanide elements, EN becomes high due to lanthanide contraction.

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