Final answer:
HC1O4 (perchloric acid) is a stronger acid because its central atom's high electronegativity leads to easier release of hydrogen ions, characteristic of strong acids.
Step-by-step explanation:
Which compound is a stronger acid? This question is based on the concept of acid strength in Chemistry. HC1O4, or perchloric acid, is mentioned as a stronger acid due to the high electronegativity of the central atom, which leads to a greater attraction for the electrons of the oxygen atoms. This increased attraction strengthens the ability to release hydrogen ions, which is a characteristic of strong acids.
Since the electronegativity of the central atom is crucial for the strength of oxyacids, we can infer that a stronger acid will have a central atom with higher electronegativity that can more effectively pull electrons towards itself, weakening the O-H bond and thus increasing the acid's strength.