(i) covalent solid
(ii) octahedral structure
(iii) ionic solid with [PCl6]+ octahedral and [PCl4]– tetrahedra
(iv) ionic solid with [PCl4]+tetrahedral and [PCl6]– octahedral
Correct Answer: (iv) ionic solid with [PCl4]+tetrahedral and [PCl6]– octahedral
Explanation: In solid state, PCl5 is an ionic solid with [PCl4]+tetrahedral and [PCl6]– octahedral.