MDCAT Chemistry MCQ #3953

During a lecture on stereoisomerism, a professor explains why 1-butene does not exhibit cis-trans isomerism despite having a double bond. The reason is:

MDCAT Chemistry MCQ #3953

  1. Question 1

    Q1. During a lecture on stereoisomerism, a professor explains why 1-butene does not exhibit cis-trans isomerism despite having a double bond. The reason is:

    • A) Two identical groups on the same carbon
    • B) Lack of a double bond
    • C) Presence of a methyl group
    • D) Free rotation around the C-C bond

    Answer: Two identical groups on the same carbon

    Explanation: 1-Butene lacks geometric isomerism because one terminal carbon has two identical hydrogen atoms. 2-Butene is tempting as it is also an alkene.