試題詳解

19. Which of the following statements is incorrect?
(A) A triple bond is composed of two π bonds and oneσ bond.
(B) σ bonds result from the head-to-head overlap of atomic orbitals.
(C) Free rotation does not occur about a double bond.
(D) π bonds have electron density on the inter-nuclear axis.
(E) More than one of these statements are incorrect.