QAIPMT-2006-Ch-2386: NEET 2006 Chemistry - Class 11 AIPMT-2006-Ch-2386 Solution: Which of the following is not isostructural with \(SiCl_4\)?

SiCl 4 , NH 4 + , SO 4 2- and PO 4 3- ions are the examples of molecules/ions which are of AB 4 type and have tetrahedral structure. SCl 4 is AB 4 (lone pair) types species. Although the arrangement of five sp 3 d hybrid orbitals in space is trigonal bipyramidal, due to the presense of one lone pair of electron in the basal hybrid orbital, the shape of AB 4 (lone pair) species gets distorted and becomes distorted tetrahedral or see-saw.