Molecular Geometry
Dr. J.L. Duffy-Matzner, online version T. McConville
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Examples

BeH2



       "Things" around central atom: 2
       Hybridization: sp
       Electronic geometry: linear
       Molecular geometry: linear
       Bond angles: 180


BF3



       "Things" around central atom: 3
       Hybridization: sp2
       Electronic geometry: trigonal planar
       Molecular geometry: trigonal planar
       Bond angles: 120


SnCl2



       "Things" around central atom: 3
       Hybridization: sp2
       Electronic geometry: trigonal planar
       Molecular geometry: bent
       Bond angles: less than 120


CCl4



       "Things" around central atom: 4
       Hybridization: sp3
       Electronic geometry: tetrahedral
       Molecular geometry: tetrahedral
       Bond angles: 109.5


NH3



       "Things" around central atom: 4
       Hybridization: sp3
       Electronic geometry: tetrahedral
       Molecular geometry: trigonal pyramidal
       Bond angles: less than 109.5


H2O



       "Things" around central atom: 4
       Hybridization: sp3
       Electronic geometry: tetrahedral
       Molecular geometry: bent
       Bond angles: much less than 109.5


PCl5



       "Things" around central atom: 5
       Hybridization: dsp3
       Electronic geometry: trigonal bipyramidal
       Molecular geometry: trigonal bipyramidal
       Bond angles: 90, 120, & 180


SF4



       "Things" around central atom: 5
       Hybridization: dsp3
       Electronic geometry: trigonal bipyramidal
       Molecular geometry: sawhorse
       Bond angles: less than 90 & 120, less than 180


BrF3



       "Things" around central atom: 5
       Hybridization: dsp3
       Electronic geometry: trigonal bipyramidal
       Molecular geometry: T-shaped
       Bond angles: less than 90 & 120, less than 180


ICl2-




       "Things" around central atom: 5
       Hybridization: dsp3
       Electronic geometry: trigonal bipyramidal
       Molecular geometry: linear
       Bond angles: 180


SF6



       "Things" around central atom: 6
       Hybridization: d2sp3
       Electronic geometry: octahedral
       Molecular geometry: octahedral
       Bond angles: 90 & 180


IF5



       "Things" around central atom: 6
       Hybridization: d2sp3
       Electronic geometry: octahedral
       Molecular geometry: square pyramidal
       Bond angles: less than 90, 180



XeF4



       "Things" around central atom: 6
       Hybridization: d2sp3
       Electronic geometry: octahedral
       Molecular geometry: square planar
       Bond angles: 90 & 180





Exercises

SCl2


ICl3


O3


SO3


H3O+


NO3-


TeCl4


OCS


BrF3





Geometric Isomers

XeCl2F2



PCl3F3-1


C2H2Br2


Thanks to Webmolecules for many of these models. Visit Webmolecules for more molecular structures and orbitals.