Lesson Worksheet: Molecular Orbital Theory Chemistry • 10th Grade

In this worksheet, we will practice describing the shapes, energies and electron occupancies of bonding, nonbonding, and antibonding molecular orbitals.


An sp2 hybridized atom in a molecule forms 𝜎 bonds to three other atoms of the same element. There are no other bonds in the molecule. Which of the following statements is true?

  • AThe dipole moment of each bond is zero.
  • BThe three bonds contribute equally to each bonding molecular orbital.
  • CAll of the bonds are partial double bonds.
  • DThe three bonds contribute equally to each bonding energy level.
  • EThe molecular bonding orbitals have the same energy.


Which of the following electronic transitions do alkanes exhibit?

  • A𝜋 to 𝜋
  • B𝜋 to 𝜋
  • C𝜎 to 𝜎
  • D𝜋to 𝜎


Liquid oxygen is attracted by a magnetic field. Which feature of the O2 molecule is responsible for this behavior?

  • AUnpaired electrons in antibonding orbitals
  • BPaired electrons in antibonding orbitals
  • CPaired electrons in nonbonding orbitals
  • DUnpaired electrons in nonbonding orbitals
  • EUnpaired electrons in bonding orbitals

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