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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 Cl`D. `S lt Se`

Answer» Correct Answer - C
Order of `DeltaH_(eg)` for halogens: `Cl gt F gt Brgt I` and order of `Delta H_(eg)` for chalcogens, `S gt Se gt Te gt Po gtO`.
`Cl` and `F` have the highest and the second highest values in the modern periodic table.


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