(thing) by Lao-Tzu Wed Jun 07 2000 at 14:31:58

It is a polyatomic ion. Sulfate is SO42-. That's one atom of sulfur, four atoms of oxygen, and a 2 negative charge.

When combined with two hydrogen atoms, sulfuric acid (H2SO4) is formed. While this is only one of many molecules that sulfate can form, it is special in that it is a strong acid.

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