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Q.

In which of the following pairs size of 1st element is higher as compared to 2nd ?

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a

Sc, Zn

b

Sc. La

c

Cu, Ag

d

La. Hf

answer is A.

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Detailed Solution

Size=Sc>2Zn3d13d10Size=Sc3d104s15s1Size=La4f05d1>Hf4f145d2(Due to lanthanide contraction)
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