Which of the following molecules can be repre | vedclass

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(C) To determine the $AB_nE_m$ type for a molecule,we identify the central atom $(A)$,the number of atoms bonded to it $(B)$,and the number of lone pa

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$H_2O$

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(C) To determine the $AB_nE_m$ type for a molecule,we identify the central atom $(A)$,the number of atoms bonded to it $(B)$,and the number of lone pairs on the central atom $(E)$:$1$. For $SO_2$: The central atom $S$ has $2$ bond pairs and $1$ lone pair,so it is $AB_2E$.$2$. For $H_2O_2$: The structure is $H-O-O-H$. Each oxygen atom is bonded to $2$ atoms and has $2$ lone pairs,but it is not a simple $AB_2E_2$ system due to the $O-O$ bond.$3$. For $H_2O$: The central oxygen atom is bonded to $2$ hydrogen atoms $(B=2)$ and has $2$ lone pairs $(E=2)$. Thus,it is $AB_2E_2$.$4$. For $XeF_2$: The central xenon atom is bonded to $2$ fluorine atoms $(B=2)$ and has $3$ lone pairs $(E=3)$. Thus,it is $AB_2E_3$.Therefore,the correct molecule is $H_2O$.

Which of the following molecules can be represented as $AB_2E_2$,where $A$ is the central atom,$B$ represents bond pairs of electrons,and $E$ represents lone pairs of electrons?

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