So the chlorite ion forms chlorous (with an " -ous" ) acid.

所亚氯根离子形成亚氯（带有“-ous” ）。

The " -ous" suffix means " less than" and thus gives us our name, chlorous acid for HClO2.

“-ous” 后缀表示“” ，此我们将其命名为 HClO2 的亚氯。