Which o f the following molecules has longest C = C length?

Question

Which o f the following molecules has longest C = C length? (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

<img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/8e6dfaa84e98aceb339855200aa5b84d-.png" /> Due to Hyperconjugation single bond character aries in double bond so bond length increase B.L. of double bond propto no. of propto Hatoms propto hyperconjuation

Q. Which o f the following molecules has longest $C = C$ length?

Due to Hyperconjugation single bond character aries in double bond so bond length increase

$B . L .$ of double bond $\propto$ no. of $\propto$ Hatoms $\propto$ hyperconjuation

Q. Which o f the following molecules has longest C=C length?

Due to Hyperconjugation single bond character aries in double bond so bond length increase B.L. of double bond ∝ no. of ∝ Hatoms ∝ hyperconjuation

Q. Which o f the following molecules has longest $C = C$ length?

Due to Hyperconjugation single bond character aries in double bond so bond length increase

$B . L .$ of double bond $\propto$ no. of $\propto$ Hatoms $\propto$ hyperconjuation