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Select the group where EN increases down...

Select the group where `EN` increases down the group

A

`F,Cl,Br`

B

`Li,Na,K`

C

`Ca, Sr, Ba`

D

`Zn, Cd, Hg`

Text Solution

Verified by Experts

The correct Answer is:
D
`Zn, Cd` and `Hg` belong to `3d, 4d` and `5d` series of transition elements (group 12). Due to imperfect screening effect of `d-` and f-orbitals in transition elements, `EN` deceases down the group 12.
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