The correct order of strength of H-bond in the following compound : — Chemical Bonding Chemistry Question

💡 Solution & Explanation

Step 1: Note that hydrogen bond strength increases with the electronegativity of the highly electronegative atom bonded to hydrogen (F > O > S). Thus, HF has the strongest hydrogen bonds and H2S has the weakest. Step 2: Compare H2O and H2O2. The oxygen in H2O carries a greater partial negative charge than in H2O2 because the presence of the peroxide linkage in H2O2 reduces the electron density on each oxygen, making H2O's hydrogen bonds stronger. Step 3: This leads to the strength order: HF > H2O > H2O2 > H2S, matching option (d).