Question

hybridisation of p4s3

Answer 1

It turns out that all of the atoms in P4S3 are sp3-hybridized! Phosphorus is not hypervalent in this compound, and each phosphorus atom is tetrahedral, with one lone pair projecting outwards from the structure. The sulfur atoms also have lone pairs, two of them, and are also tetrahedral, too. Thus, all of the P and S atoms are sp3-hybridized. There is no involvement of d orbitals in this compound! Each of the bonds is a sigma bond, regardless of whether it is P-S or P-P.