Question

Determine the electron geometry, molecular geometry, and idealized bond angles for each of the following molecules. In which cases do you expect deviations from the idealized bond angle?

PF3

SBr2

CH4

COCl2

Answer 1

PF3 --> ahs 1 lone pair (P = 5 electrons)

so..

electron geometry --> tetrahedrical

molecular gometry -->  trigonal bypiramidal

bond angles --> 109.5° approx

SBr2

electron geometry --> tetrahedrical

molecular gometry -->  bent molecule

bond angles --> 104.5° approx

expect to deviate due to lone pairs

CH4

electron geometry --> tetrahedrical

molecular gometry --> tetrahedrical

bond angles --> 109.5° approx

will not deviate

COCl2

electron geometry --> trigonal planar

molecular gometry --> trigonal planar

bond angles --> 120° approx

expect this to deviate due to double bond