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Statement - I :Scandium is the lightest transition metal.
Statement - II :Atomic radius of scandium is largest among all the transition elements

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Both statements I and II are correct

Statement-I is incorrect and statement-II is correct

Both statements I and II are incorrect

Statement-I is correct and statement-II is incorrect

answer is B.

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Detailed Solution

Scandium (Sc) is the lightest transition element. It is the first element in the 3d transition series. Among the transition elements, Sc has the lowest density.

The order of sizes of d-block elements are, 3d-series<4d-series $\approx$ 5d-series.

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