Complete below by writing the symbols for the cation and anion that make up each ionic compound. Write the cation and anion.
1) [tex]\mathrm{MnO} 2[/tex]
2) [tex]\mathrm{NH} 4 \mathrm{I}[/tex]
3) [tex]\mathrm{V} 3(\mathrm{PO} 4) 2[/tex]
4) NiF2