Intramolecular hydrogen bonding is formed in

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(B) Intramolecular hydrogen bonding occurs within a single molecule. It typically happens in compounds where a hydrogen atom is bonded to a highly ele

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salicylaldehyde

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(B) Intramolecular hydrogen bonding occurs within a single molecule. It typically happens in compounds where a hydrogen atom is bonded to a highly electronegative atom (like $O$,$N$,or $F$) and is positioned close to another electronegative atom within the same molecule,allowing for the formation of a stable ring structure. In salicylaldehyde,the hydrogen atom of the hydroxyl $(-OH)$ group is close to the oxygen atom of the aldehyde $(-CHO)$ group,leading to the formation of an intramolecular hydrogen bond. $H_2O$ and $NH_3$ exhibit intermolecular hydrogen bonding,while benzophenone lacks the necessary donor group ($-OH$,$-NH_2$,etc.) for hydrogen bonding.

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