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`rArr`The decreasing order of stability of following cation is (Question No.56-60). A. `PgtQgtRgtS`B. `QgtSgtRgtP`C. `QgtPgtSgtR`D. `QgtPgtRgtS`

Answer» Correct Answer - D
`+M` or `+R` effect operate at ortho and para position and it increases stability more than `+I` group.
`-M` or `-R` effect operate at ortho and para position and it decreases stability of cation more than `-I` groups.
`+I` and `-I` effect operate at all position but it is distance dependent.


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