The number of species from the following that are involved in sp3d2 hybridization is : [Co(NH3)6]3+, SF6, [CrF6]3-, [CoF6]3-, [Mn(CN)6]3-, and [MnCl6]3-
- 4
- 3
- 5
- 6
Answer
(2) 3
Solution
[Co(NH3)6]3+: Co3+, 3d6; NH3 pairs the electrons d2sp3
SF6: S in the excited state 3s1 3p3 3d2 sp3d2
[CrF6]3-: Cr3+, 3d3; two 3d orbitals are already empty d2sp3
[CoF6]3-: Co3+, 3d6; weak-field F-, 4 unpaired electrons sp3d2
[Mn(CN)6]3-: Mn3+, 3d4; strong-field CN- pairs the electrons d2sp3
[MnCl6]3-: Mn3+, 3d4; weak-field Cl-, 4 unpaired electrons sp3d2
sp3d2: SF6, [CoF6]3- and [MnCl6]3- = 3 species
Answer: (2)