Dictionary entry overview: What does isle mean? â¢ ISLE (noun) The noun ISLE has 1 sense: 1. a small island Familiarity information: ISLE used as a noun is very rare.
The sulfate ion is SO42- The sulfite ion is SO32- and is more basic that sulfate.
Basic Chemistry. Basically sulfites (sulphites) refer to compounds that contain a sulfite ion. This means they are made up of a sulfur atom and three oxygen atoms. They are usually combined with sodium or potassium before they can have industrial applications.