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Question

Correct stability order of resonating structure is:

1076804_90504537a2b642e5a4ebb3956f2dfea2.JPG

A
P>Q>R>S
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B
P>Q>S>R
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C
P>R>Q>S
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D
P>S>Q>R
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Solution

The correct option is A P>Q>R>S
The most stable resonating structure is the one with no charge separation. This corresponds to P.
This is followed by Q as it has an octet of all atoms complete. None of them is electron deficient.
The resonating structure with a positive charge on a relatively electropositive atom and negative charge on the electronegative atom is more stable than the reverse case.
Order of stability is:-
P>Q>R>S

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