1-27 Read and write formulas of compounds containing polyatomic ions

1-27-1. Which of the following is the correct formula for sodium phosphate?
A. NaP, B. NaPO₃, C. Na₃PO₄, D. Na₃(PO₄)₂

1-27-2. Which of the following is the correct formula for ammonium sulfide?
A. (NH₄)₂S, B. NH₄SO₃, C. (NH₃)₂SO₄

1-27-3.Which of the following is the correct formula for iron(III) sulfate?
A. Fe₃ S, B. FeSO₄ , C. Fe₂(SO₃)₃ , D. Fe₂(SO₄)₃

1-27-4.Which of the following is the correct formula for potassium hydrogen phosphate?
A. KHPO₄, B. K₂HPO₄, C. KH₂PO₄

1-27-5. Which of the following is the correct name for K₂CO₃?
A. dipotassium carbon trioxide, B. potassium carbide,
C. dipotassium carbonate, D. potassium carbonate

1-27-6. Which of the following is the correct name for FeSO₄?
A.iron(I) sulfate, B. iron(II) sulfate, C.iron(III) sulfite, D. iron sulfite

1-27-7. Which of the following is the correct name for BaO₂?
A. barium oxide, B. barium peroxide,
C. barium dioxide, D. barium(IV) oxide