The ionic bonds X^+Y^- are formed when : (I) electron affinity of Y is high (II) ionization energy o — Chemical Bonding Chemistry Question
Question
The ionic bonds X^+Y^- are formed when : (I) electron affinity of Y is high (II) ionization energy of X is low (III) lattice energy of XY is high (IV) lattice energy of XY is low
💡 Solution & Explanation
Step 1: Classify the hydrogen bonding type of each molecule. Acetic acid (I) dimerizes via intermolecular H-bonding. o-Nitrophenol (II) undergoes intramolecular H-bonding because the hydroxyl and nitro groups are situated very close to each other on adjacent carbons. Step 2: m-Nitrophenol (III) is unable to form intramolecular H-bonds due to the distance between groups and thus forms intermolecular H-bonds. o-Boric acid (IV) forms a hydrogen-bonded polymeric sheet structure. Step 3: Thus, molecules I, III, and IV exhibit intermolecular hydrogen bonding, which corresponds to option (c).