Which of the folowing complex ions possesses `sp^3 d^2` hybridization?

Options

A. `[Cr(NH_3)_6]^(3+)`
B. `[FeF_6]^(3-)`
C. `[Co(NO_2)_6]^(3-)`
D. `[Ti(H20)_6]^(3-)`

Answer

B

Explanation

The electronic configurations of `Cr, Fe, Co and Ti` in the complexes are `(3d)^3, (3d)^5, (3d)^6 and (3d)^1` electronic configurations, respectively. These involve `d^2 sp^3, sp^3 d^2, d^2 sp^3 ` and `d^2 sp^3` hybridization, respectively.