Question:
Which of the following resonating structures is the most stable?
Which of the following resonating structures is the most stable?
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While comparing resonance structures:
Prefer structures with complete octets
Minimise charge separation
Place negative charge on electronegative atoms
Avoid adjacent like charges
Prefer structures with complete octets
Minimise charge separation
Place negative charge on electronegative atoms
Avoid adjacent like charges
Updated On: Jan 21, 2026
- Structure 1
- Structure 2
- Structure 3
- Structure 4
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The Correct Option is B
Solution and Explanation
The stability of resonance structures depends on the following factors:
Minimum charge separation
Maximum number of atoms having complete octet
Negative charge on more electronegative atoms
Positive charge on less electronegative atoms
Analysis of options:
Option (1): Contains unnecessary charge separation and a carbocation not well stabilised.
Option (2): Has:
Minimum charge separation
Positive charge delocalised and stabilised by resonance
Negative charge located on oxygen (more electronegative) Hence, it is the most stable.
Option (3): Contains two adjacent positive charges, leading to strong electrostatic repulsion.
Option (4): Shows excessive charge separation and a highly unstable dicationic nitrogen.
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