Central atoms of `H_(2)` is S. There are 6 electrons in its valence shell`(._16S=2,8,6)` 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 to the presence of 2 lone pairs the shape becomes distorted tetrahedral or angular or bent (non-linear).
`PCl_(3)` - Central atom is phosphorous. There are 5 electrons in the valence shell `(._(15)P=2,8,5)`. 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).
