Question

Increasing order of stability of the resonance structures is: Choose the correct answer from the options given below:

• A. $D , C , A , B$
• B. C, D, A, B
• C. D, C, B, A
• D. $D , A , B$

Answer 1

The Correct Option is B

To determine the stability order of resonance structures, we must consider several key factors:

1. Number of Covalent Bonds: Resonance structures with more covalent bonds tend to be more stable.
2. Charge Distribution: Structures where the negative charges are on more electronegative atoms and positive charges on less electronegative atoms are favored.
3. Less Charge Separation: Structures with minimal charge separation are generally more stable.
4. Full Octet: Structures that have a full octet of electrons for all the atoms (especially second-period atoms like C, N, O, etc.) are more stable.

Using these principles, let’s evaluate the given options:

1. Option A: Resonance structure analysis reveals how these principles are applied to assess stability.
2. Option B: Provides a comparison regarding how resonance structures manage charge separation and electron octets.
3. Option C: Takes overall charge distribution into account, implying higher stability due to better charge allocation.
4. Option D: Examines the covalent bond aspect and the full octet rule as criteria for structure stability.

Upon analyzing the factors, we find that the increasing order of stability is \(C \lt D \lt A \lt B\).

Hence, the correct answer is C, D, A, B.

In summary, by applying the principles of resonance structure stability, we comprehensively concluded that Option C, D, A, B is indeed correct.