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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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