Which of the following statements concerning the selection rules for pericyclic reactions is correct?

Question

Quizplus · Accepted Answer

The selection rules for pericyclic reactions are based on the symmetry of the molecular orbitals involved in the reaction. The symmetry of the molecular orbitals is determined by the number of electrons in the orbitals and the arrangement of the electrons in the orbitals. The symmetry of the molecular orbitals is described by the terms gerade (g) and ungerade (u). Gerade orbitals are symmetric with respect to the center of symmetry of the molecule, while ungerade orbitals are antisymmetric with respect to the center of symmetry of the molecule. The selection rules for pericyclic reactions state that the symmetry of the molecular orbitals involved in the reaction must match. For example, if the reaction is described by the term TE, then the outcome of the reaction is given by the term AC. This is because the symmetry of the molecular orbitals involved in the reaction is the same for both the TE and AC terms.

Which of the Following Statements Concerning the Selection Rules for Pericyclic