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Q.

Which of the following elements has the largest size?

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a

Zn

b

Co

c

Ni

d

Cu

answer is D.

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Detailed Solution

The last element Zn in a transition elements Co, Ni, Cu and Zn has the largest size.

Among the given compound Zn has the largest atomic size.

The atomic radius decreases along the period but as we move across the period in the d-block the shielding effect also increases.

Because of this shielding effect the size of Zn is largest.

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