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.
Quick Answer. The molecular formula for the chemical compound calcium sulfite is written as CaSO3. The formula illustrates that the compound contains one atom of calcium, represented by Ca; one atom of sulfur, represented by S; and three atoms of oxygen, represented by the symbol O. Continue Reading.