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Q.

In which of the following pair size of I element is higher than II element ?

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a

Sc, Zn

b

Sc, La

c

Cu, Ag

d

Hf, La

answer is A.

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Detailed Solution

Sc>Zn in size because in d-block element moving L⟶RZeff ↑ ∴ size ↓
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In which of the following pair size of I element is higher than II element ?