How are steric numbers used?
The steric number of a molecule is the number of atoms bonded to the central atom of a molecule along with the number of lone pairs on the central atom.
The steric number of a certain molecule is often used in VSEPR theory in order to determine the particular shape, or molecular geometry, that will be formed. It also decides the distribution of orbitals of the central atom that that participates in the bond formations.
For example, Stearic number of
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