試題詳解

4. Which of the following molecules are nonlinear?
NO₂^–, C₂H₂, N₃^–, HCN, CO₂, H₂O₂ , N₂O (central atom is N)
(A) C₂H₂, HCN
(B)NO₂^–, H₂O₂ 
(C)CO₂, N₃^–
(D) N₃^–, NO₂^–
(E) N₂O, H₂O₂