Which of the following molecule can show Lewis acidity?<br>(I) CO2<br>(II) Br2<br>(III) SnCl2<br>(IV — p Block Elements Chemistry Question

💡 Solution & Explanation

Step 1: A Lewis acid is a chemical species that can accept an electron pair from a Lewis base. Step 2: CO2 acts as a Lewis acid by accepting hydroxide ions at its electrophilic carbon center. SnCl2 has vacant d-orbitals and can accept halide ions (e.g., SnCl2 + Cl- -> SnCl3-). HF can accept electron pairs through hydrogen-bonding/proton transfer. Step 3: Thus, molecules I, III, and IV can function as Lewis acids under appropriate conditions, corresponding to option (c).