How does VSEPR Theory help predict the shape of molecules?
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VSEPR (Valence Shell Electron Pair Repulsion) Theory states that electron pairs (both lone pairs and bond pairs) in the valence shell of the central atom repel each other and arrange themselves in space to minimize this repulsion. The minimized repulsion leads to a specific geometric arrangement of electron pairs, which in turn determines the molecular geometry (shape) and bond angles. Lone pairs exert more repulsion than bond pairs (lp-lp > lp-bp > bp-bp). Topics like these are well explained in our class 11 chemical bonding notes.
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