(Polar molecules, Non-polar molecules, etc.)
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This is due to the presence of lone pairs. If there is no lone pair, all the electron domains form bonds and the electron domain geometry is the same as molecular geometry. However, if there is a lone pair, the lone pair doesn't form a bond and therefore doesn't contribute to the shape of the whole molecule.
Just to clarify, for electron domain geometry should we count the lone pairs as bonds, for example, would AX2E2 be tetrahedral, or should we not include the lone pairs at all when looking at electron geometry and AX2E2 should be considered linear?
lone pair electrons must be considered along with bonding electrons for electron geometry.
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