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MCQEasyJEE Main 2024 · 27 January, Shift 2Electronic Effects (Inductive, Resonance, Hyperconjugation)

Chemistry Question from JEE Main 2024 · 27 January, Shift 2

The order of relative stability of the contributing structures shown below is:

(I) CH2=CH−C    H=O\mathrm{CH_2{=}CH{-}\overset{\;\;}{C}H{=}O}    (II) C⊕H2−CH=CH−O⊖\mathrm{\overset{\oplus}{C}H_2{-}CH{=}CH{-}\overset{\ominus}{O}}    (III) C⊖H2−CH=CH−O⊕\mathrm{\overset{\ominus}{C}H_2{-}CH{=}CH{-}\overset{\oplus}{O}}

(I) is the neutral structure, (II) carries the negative charge on oxygen and (III) carries the negative charge on carbon.

Choose the correct answer from the options given below:

  • A

    I>II>IIII > II > III

  • B

    II>I>IIIII > I > III

  • C

    I=II=IIII = II = III

  • D

    III>II>IIII > II > I

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