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 longestis：NO+ ＜NO2- ＜ NO3-
III. In the compound O2F2, the oxidation state of oxygen is +1 and the formalcharge 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