Two chemical species, X and Y, are described by their structural properties. Species X has a central atom with sp ^3 d hybridization, a linear shape, and a zero dipole moment. Species Y has a central atom with sp ^3 d ^2 hybridization, a square pyramidal shape, and a non-zero dipole moment. Identify the correct pair of species (X and Y respectively) from the given options.

Step-by-step solution

For species X: The hybridization is sp ^3 d , the shape is linear, and the dipole moment is zero. This corresponds to a steric number of 5 with 3 lone pairs on the central atom. XeF ₂ and I ₃^- satisfy these conditions. CO ₂ is linear with zero dipole moment, but its hybridization is sp . For species Y: The hybridization is sp ^3 d ^2 , the shape is square pyramidal, and the dipole moment is non-zero. This corresponds to a steric number of 6 with 1 lone pair on the central atom. BrF ₅ satisfies these conditions. Xe