試題詳解

24. Which of the following statements best describes BF₃ and NF₃? (Nole: Geometry refers to the electron pair arrangement, and shape refers to the atom arrangement.)
(A)they have variable geometries and shapes due to their potential resonance structures.
(B)they have the same geome etry and different shapes.
(C)they have the same geometry and the same shape.
(D)they have different geometries and different shapes.
(E)they have different geometries and the same shape.