Chemistry - CHEMICAL BONDING Question with Solution | TestHub

The statement "HF is the most volatile acid among HX" is incorrect. Volatility decreases with increasing intermolecular forces. While HF has strong H-bonding, its molecular weight is much lower than HCl, HBr, and HI. HI is the least volatile due to its larger size and stronger London dispersion forces.

Therefore, option A is the incorrect statement.