Consider the following statements regarding hydrogen bonds : Which of the statements given above is/are not correct?
II only
Statement I is correct: hydrogen bonding occurs when hydrogen is covalently bonded to a small, highly electronegative atom such as O, N or F. Statement II is not correct: hydrogen bonds can be intermolecular (e.g. between water molecules) as well as intramolecular (e.g. in o-nitrophenol). Statement III is correct: a greater electronegativity difference gives a stronger hydrogen bond, so bond strength decreases as electronegativity of the bonded atoms decreases. Hence only statement II is not correct.
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