How do I name the following compounds;

K2S2O8, S2O8{-2}, Na2S2O3 and S2O3{-2}

I got

1)Potassium persulfate
2)persulfate ion
3)Sodium thiosufate
4)thiosulfate ion

posassium hyposulfite (this compound has a lot of common names, such as potassium dithionite.

hyposulfite ion.
correct. Its IUPAC name is trioxido-1κ3O-disulfate(S—S)(2−)
correct.

Potasssium Persulfate

Persulfate Ion
Sodium TrioSulphate

To name these compounds, you need to follow the rules of nomenclature for inorganic compounds.

Let's break it down step by step for each compound:

1. K2S2O8:
- Identify the cation and anion: The cation is potassium (K+) and the anion is persulfate (S2O8-).
- Write the name of the cation followed by the name of the anion: potassium persulfate.

2. S2O8{-2}:
- The anion is persulfate (S2O8-).
- Since it already has a charge of -2, we don't need to specify the charge in the name.
- Write the name of the anion: persulfate.

3. Na2S2O3:
- Identify the cation and anion: The cation is sodium (Na+) and the anion is thiosulfate (S2O3-).
- Write the name of the cation followed by the name of the anion: sodium thiosulfate.

4. S2O3{-2}:
- The anion is thiosulfate (S2O3-).
- Since it already has a charge of -2, we don't need to specify the charge in the name.
- Write the name of the anion: thiosulfate.

Remember to consider the charges of the ions when writing the formulas and names of the compounds.