Effect on lone pairs on the shape of molecules

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Last updated 3:23 PM on 6/14/26

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Key fact about lone pairs

Repel more strongly than bonding pairs, extra repulsion decreases other bond angles by 2.5 degrees.

Normally tetrahedral bond angle is 109.5, but if theres a lone pair, the extra repulsion reduces bond angle by 2.5 degrees.

Therefore bond angle would be 107 in tetrahedral

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Whats important about dative bond

Has the same repulsion as normal covalent bond.

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a

aa

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a