試題詳解

2. Which of the following statements is (are) correct?
I. Molecules SO₃, SeS₂, PCl₅, TeCl₄, ICl₃, and OCl₂ all exhibit at least one bond angle of approximately120°
II. The order of the nitrogen-oxygen bond length from the shortest to the longest is：NO⁺ ＜NO2^- ＜ NO₃^-
III. In the compound O₂F₂, the oxidation state of oxygen is +1 and the formal charge of oxygen is 0. IV.The bond angle in XeCl₂ should be similar to that of CS₂ or KrF₂.
V. Among compounds SF₄, KrF₄, and IF₅, only SF₄ is polar.
(A)III
(B)II, IV, and V
(C)I, V
(D)I, II, and III
(E)II, III, and IV