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MHT CET202616 April 2026Morning ShiftChemistryHydrocarbonsActual

Which from following alkenes is highly stabilized ?

Options

  1. AR ₂ C = CR ₂
  2. BR ₂ C=CH ₂
  3. CRCH=CHR
  4. DRCH=CH ₂

Correct answer

A. R ₂ C = CR ₂

Step-by-step solution

The stability of an alkene increases with the number of alkyl groups attached to the double-bonded carbon atoms due to hyperconjugation and the +I effect. The order of stability of alkenes based on substitution is: Tetrasubstituted > Trisubstituted > Disubstituted > Monosubstituted. Among the given options, R ₂ C = CR ₂ is a tetrasubstituted alkene, having the maximum number of alkyl groups attached to the double bond. Thus, it has the maximum number of hyperconjugative structures and is the most highly stabilized

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