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Q.

Scandium is a transition element. But Zinc is not why?

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Detailed Solution

In Sc-[Ar]3d14s2 unpaired 'd' electron is present in the penultimate shell, hence it is transition element. But in Zn-[Ar]3d104s2 no unpaired 'd' electrons are present in the penultimate shell, hence it is not a transition element.

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