[KurzickMushroom]

Hi guys. I'm was doing redox reactions and got confused between a polyatomic ion and a regular chemical compound. I was dealing with a SO₂ on the products side. I thought it was hyposulphite and would following the charge of 2-. My teacher told me that this was sulphur dioxide instead. How can I distinguish between them? From what she told me, if I see what looks to be a polyatomic ion standing alone, is it just a regular compound?

ex: KPO₄ is Potassium phosphate.

If I get PO₄ + ? + ?----> ?

Would this PO₄ that is standing alone be considered Phosphorus Tetroxide?

[Astrokel]

There is no KPO₄ because phosphate is PO₄^3-. I don't get your last sentence.

[KurzickMushroom]

TY Astrokel, I got understand this now, sry for the confusion.