MDCAT Chemistry MCQ #3985

In the comparison of sigma and pi bonds in ethene, which statement correctly describes the formation of a sigma bond?

MDCAT Chemistry MCQ #3985

  1. Question 1

    Q1. In the comparison of sigma and pi bonds in ethene, which statement correctly describes the formation of a sigma bond?

    • A) Pi bonds are formed by head-to-head overlap
    • B) Sigma bonds are formed by head-to-head overlap
    • C) Sigma bonds are weaker than pi bonds
    • D) Pi bonds allow free rotation of atoms

    Answer: Sigma bonds are formed by head-to-head overlap

    Explanation: Sigma bonds are formed by head-to-head overlap and are stronger than pi bonds, which are formed by parallel or sideway overlap.