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For magnitude of eletron gain enthalpy o...

For magnitude of eletron gain enthalpy of chalocogens and halogens, which of the following option is correct?

A

`Br gt F`

B

`S gt F`

C

`O lt CI`

D

`S lt Se`

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The correct Answer is:
C
Order of `Delta_(eg)H` for halogens: `CI gt F gt Br gt I` & Order of `Delta_(eg)H` for chalcogens: `S gt Se gt Te gt Po gt O. CI` and `F` have the highest and `II^(nd)` highest values in Modern periodic table.
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