The molecular geometry of the molecule PHCl2 is trigonal pyramidal.
The shape of a molecule is determined by the number of electron pairs that surround the central atom in the molecule. The shape of the molecule PHCl2 is based on a tetrahedron since there are four electron domains in the molecule.
Recall that there are three bonded atoms to the central phosphorus atom which bears a lone pair hence the molecular geometry is trigonal pyramidal.
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