試題詳解

3.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.