2024 Chemical Bonding and Molecular StructureSigma and Pi Bonds in Hydrocarbons Medium Question 10 of 108 in Chemical Bonding and Molecular Structure

Match List-I with List-II regarding the number and types of bonds between two carbon atoms in the given molecules.

Column I

  • A. ethane
  • B. ethene
  • C. carbon molecule, $C_2$
  • D. ethyne

Column II

  • I. one $\sigma$-bond and two $\pi$-bonds
  • II. two $\pi$-bonds
  • III. one $\sigma$-bond
  • IV. one $\sigma$-bond and one $\pi$-bond

Correct answer: A → III, B → IV, C → II, D → I

Solution

Ethane ($CH_3-CH_3$): one $\sigma$-bond Ethene ($CH_2=CH_2$): one $\sigma$-bond and one $\pi$-bond Carbon molecule $C_2$: two $\pi$-bonds Ethyne ($HC \equiv CH$): one $\sigma$-bond and two $\pi$-bonds Correct match: A-III, B-IV, C-II, D-I.

Concept Bonding between carbon atoms in ethane, ethene, ethyne and C2

Chemical Bonding and Molecular Structure in past papers

108 questions from this chapter have appeared across 27 exam years.