OnlineCBT
Chemistry · PYQ NEET UG 2021
हिन्दीStatement I: Acid strength increases in the order given as \( \mathrm{HF} \ll \mathrm{HCl} \ll \mathrm{HBr} \ll \mathrm{HI} \). Statement II: As the size of the elements \( \mathrm{F, Cl, Br, I} \) increases down the group, the bond strength of \( \mathrm{HF, HCl, HBr} \) and \( \mathrm{HI} \) decreases and so the acid strength increases. In the light of the above statements, choose the CORRECT answer from the options given below.
Correct answer · Option 4
Both statement I and statement II are true.
Explanation
Both statements are correct because the bond dissociation enthalpy decreases down the group from HF to HI due to increasing atomic size, making proton release easier and thus increasing acidic strength.
