2 lone pair +3 bond pair Stearic number =5 So, general formula is AB3L2.
(Here, L = number of lone pair.) Hybridisation =sp3d. So, the shape is T- shape
Note Geometry of the compound having sp3d hybridisation should to tetragonal bipyramidal (TBP) according to VSEPR theory. But due to two lone pair, geometry is distorted. In TBP lone pair occupy equatorial position.