(Polar molecules, Non-polar molecules, etc.)
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The electron geometry is the arrangement of the regions of electron density (lone pairs + bonding regions) around the central atom. The molecular geometry is the shape of the molecule, which is only determined using the bonding regions. For example, the electron geometry of H2O is tetrahedral because the oxygen has 2 lone pairs and 2 bound hydrogens. However, the molecular geometry/shape is bent because the lone pairs are not included.
The electron geometry considers all regions of electron density, regardless of bonding pairs electrons or lone pairs electrons; the molecular shape considers only bonding regions. Consequently, when the electron geometry is the same, depending on the number of lone pairs electrons, the molecular shape differs.
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