1.

Which of the group `16` elements has the least negative `Delta_(eg)H`?A. `O`B. `S`C. `Se`D. `Te`

Answer» Correct Answer - A
The correct order of decreaing negative `Delta_(eg)H` is:
`Sgt Se gt Te gt O`. Oxygen has the least negative `Delta_(eg)H` on account of maximum `e^(-)-e^(-)` repulsion.


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