Identify the pair of species that share the same hybridisation for their central atoms but have different molecular shapes, with the added condition that BOTH species possess a non-zero dipole moment.

Step-by-step solution

Let us evaluate each pair based on the three given conditions: same hybridisation, different shapes, and both being polar (non-zero dipole moment). Option 1: PCl₅ has sp^3d hybridisation (trigonal bipyramidal, non-polar). PCl₃ has sp^3 hybridisation (trigonal pyramidal, polar). They have different hybridisations. Option 2: XeF₂ has sp^3d hybridisation (linear, non-polar). I₃^- has sp^3d hybridisation (linear, non-polar). They have the same shape and both are non-polar. Option 3: H₂O has sp^3 hybridisation (bent, po