In terms of polar character, which of the following order is correct? — Chemical Bonding Chemistry Question

💡 Solution & Explanation

Step 1: The polar character of a bond is directly proportional to the electronegativity difference (ΔEN) between the bonded atoms. Step 2: Compare the electronegativity differences: For H-S: 2.5 - 2.1 = 0.4; For H-N: 3.0 - 2.1 = 0.9; For H-O: 3.5 - 2.1 = 1.4; For H-F: 4.0 - 2.1 = 1.9. Step 3: Since the electronegativity difference increases in the order S < N < O < F, the polar character increases in the order H_2S < NH_3 < H_2O < HF. Thus, the correct option is (b).