Final answer:
By noting the number of bonding and nonbonding electron pairs, we can determine the molecular shape. The Lewis electron-pair approach, along with the valence-shell electron-pair repulsion (VSEPR) model, can be used to predict the shapes of molecules and polyatomic ions.
Step-by-step explanation:
By noting the number of bonding and nonbonding electron pairs, we can determine the molecular shape. The Lewis electron-pair approach, along with the valence-shell electron-pair repulsion (VSEPR) model, can be used to predict the shapes of molecules and polyatomic ions. VSEPR theory assigns a set of hybridized orbitals that corresponds to the geometry of the molecule.