Explain the non-linear shape of H2S and non-planar shape of PCl3 are using valence shell electron pair repulsion theory.
Central atom of H2 is S. There are 6 electrons in its valence shell . Two electrons are shared with two H-atoms and the remaining four electrons are present as two lone pairs.
Hence, total pairs of electrons are four (2 bond pairs and 2 lone pairs). Due tot he presence of 2 lone pairs the shape becomes distorted tetrahedral or angular or bent (non-linear).
PCl3-Central atom is phosphorus. There are 5 electrons in its valence shell . Three electrons are shared with three Cl-atoms and the remaining two electrons are present as one lone pair.
Hence, total pairs of electrons are four (1 lone pair and 3 bond pairs). Due to the presence of one lone pair, the shape becomes pyramidal (non-planar).
