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Out of H2O and H2S, which one has higher bond angle and why?

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2 Answers

Bond angle of H2O is larger, because oxygen is more electronegative than sulphur therefore bond pair electron of O–H bond will be closer to oxygen and there will be more bond-pair bond-pair repulsion between bond pairs of two O–H bonds.

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Bond angle is directly proportional to electronegativity of central atom.

as electronegativity of O is more than S so bond angle of H2O more than H2S.

Due to more electronegativity of oxygen electron cloud shift towards it and this lead to increase in b.p-b.p repulsion.

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