Which of the following molecules has the smal | vedclass

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(A) To determine the bond angle,we look at the hybridization and the number of lone pairs on the central atom:$1$. $CO_2$: $sp$ hybridization,linear g

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$H_2O$

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(A) To determine the bond angle,we look at the hybridization and the number of lone pairs on the central atom:$1$. $CO_2$: $sp$ hybridization,linear geometry,bond angle = $180^{\circ}$.$2$. $CH_4$: $sp^3$ hybridization,tetrahedral geometry,bond angle = $109.5^{\circ}$.$3$. $NH_3$: $sp^3$ hybridization,trigonal pyramidal geometry,one lone pair,bond angle = $107^{\circ}$.$4$. $H_2O$: $sp^3$ hybridization,bent geometry,two lone pairs,bond angle = $104.5^{\circ}$.Due to the presence of two lone pairs on the oxygen atom in $H_2O$,the lone pair-lone pair repulsion is greater than the lone pair-bond pair repulsion,which compresses the $H-O-H$ bond angle to $104.5^{\circ}$,the smallest among the given options.

Which of the following molecules has the smallest bond angle?

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