HO4Cl denotes perchloric acid, the strongest acid among the listed compounds. It is highly corrosive and widely used as an oxidizing agent and catalyst in various chemical reactions.
Related terms
Perchlorate ion (O4Cl⁻): The conjugate base of perchloric acid, which is more stable and less acidic.
HBrO4 (perbromic acid): A stronger oxyacid than perchloric acid, formed when bromine tetroxide dissolves in water.
HIO4 (periodic acid): Another powerful oxyacid compared to perchloric acid, resulting from iodine pentoxide dissolving in water.