Naming multivalent and polyatomic compounds

Name this formula:

FePO₄

• Iron Phosphide

• Iron (III) Phosphide

• Iron Phosphate

• iron (III) phosphate

What is the name for Cr(OH)₂?

• Chromium (I) hydrogen oxide

• Chromium (II) hydroxide

• Chromium (III) hydroxide

• Chromium (II) hydrogen oxide

What is the name for: Fe(CH₃COO)₂

• Iron(II) acetate
• Iron(II) chloride
• Iron(II) sulfate
• Iron(III) acetate

What is the name for: V₂(CO₃)₅

• Vanadium(III) Carbonate
• Vanadium(IV) Carbonate
• Vanadium(V) Carbonate
• Vanadium(II) Carbonate

What is the name for: V(CO₃)₂

• Vanadium(II) carbonate
• Vanadium(III) carbonate
• Vanadium(IV) carbonate
• Vanadium(V) carbonate