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rArrThe decreasing order of stability of...

`rArr`The decreasing order of stability of following cation is (Question No.56-60).

A

`PgtQgtRgtS`

B

`QgtSgtRgtP`

C

`QgtPgtSgtR`

D

`QgtPgtRgtS`

Text Solution

Verified by Experts

The correct Answer is:
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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