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Why are lone pair\(-\)lone pair repulsions stronger than the lone pair\(-\)bond pair repulsion?

Answer

Lone pairs are localised on a single atom whereas bond pairs are shared between two atoms. Lone pair electrons in a molecule occupy more space as compared to bonding pair electrons so lone pair causes more repulsion between them. This is the reason that lone pair-lone pair repulsions stronger than the lone pair-bond pair repulsion.
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