Which of the following statements about π molecular orbitals is/are correct?
A) π molecular orbitals are cylindrically symmetric.
B) Most of the electron density in a π molecular orbital is centered above and below the internuclear axis.
C) When two atoms are connected by a double bond, both of these bonds are π bonds.
D) Both statements B and C are correct.
E) Statements A, B, and C are all correct.

Question

Quizplus · Accepted Answer

B is correct because π molecular orbitals indeed have most of their electron density located above and below the internuclear axis, distinguishing them from σ orbitals, which are cylindrically symmetric around the bond axis. A is incorrect because it describes σ orbitals, not π orbitals. C is incorrect because in a double bond, one bond is a σ bond and the other is a π bond, not both π bonds.

Which of the Following Statements About π Molecular Orbitals Is/are