The molecules aluminium chloride (AlCl3) and phosphine (PH3) can join together by the formation of a co-ordinate covalent bondState the shape around 'P' atom and 'Al' in this compoundGive the bond angle around these atoms and explain why these are different from those in separate molecules.
Al is sp2 hybridized in AlCl3 which results in a planar trigonal molecule with an angle of 120 P is sp3 hybridized in PH3 but its shape is pyramidal with angle less than 100 When the two join to form abond, Al gets sp3 hybridized and acquires a nonplanar tetrahedral shape with angles of 109.5 Similarly P also acquires tetrahedral shape and angles revert back to 109.5
