Ions and Compound Formulas

The correct formula for sodium oxide is:
1. Na¹⁺O^2-
2. Na₂¹⁺O^2-
3. Na²⁺O^2-
4. Na₂¹⁺O₂^2-
The compound CuCl₂ is named:
1. copper chloride
2. copper chlorine
3. copper(I) chloride
4. copper(II) chloride
The correct name for the compound Na₂S is:
1. sodium sulfate
2. sodium sulfide
3. sodium sulfur
4. sodium(II) sulfite
Identify the correct formula for Iron(II) phosphide.
1. Fe₃²⁺P^3-₂
2. Fe₂³⁺(PO₃^4-)₂
3. Fe₂²⁺P^4-
4. Fe₂²⁺P^2-₂
The correct formula for silver nitride is:
1. Ag²⁺N^1-₂
2. Ag₃¹⁺N^3-
3. Ag²⁺NO₃^2-
4. Ag₂¹⁺N^2-
The correct formula for the compound Nickel(II) bromide is:
1. Ni²⁺Br^2-
2. Ni₂²⁺Br₂^1-
3. Ni²⁺(Br^1-)₂
4. Ni²⁺Br₂^1-
The correct name for the compound Ca²⁺O^2- is:
1. calcium monoxide
2. calcium(II) monoxalate
3. calcium oxide
4. calcium oxygen
The correct formula for mercury(II) sulfide is:
1. Hg₂²⁺S^4-
2. Hg²⁺S^2-
3. Hg²⁺(SO₄^1-)₂
4. Hg₂²⁺SO₄^2-
The correct formula for aluminum nitride is:
1. Al²⁺N^2-
2. Al₂³⁺(NO₂^2-)₃
3. Al³⁺N^3-
4. Al₃⁺N^3-
The formula for zinc iodide is:
1. Zn²⁺I₂^1-
2. Zn⁺I^1-
3. Zn²⁺I^2-
4. Zn³⁺I₃^1-
The correct formula for chromium(III) oxide is:
1. Cr₂³⁺O₃^2-
2. Cr₃²⁺O₃^2-
3. Cr₃²⁺O₂^3-
4. Cr³⁺O^3-
The correct name for the compound Fe₂S₃ is:
1. iron sulfide
2. iron(II) sulfide
3. iron(III) sulfide
4. diiron trisulfide
The correct formula for magnesium fluoride is:
1. Mg²⁺F₂^1-
2. Mg¹⁺F^1-
3. Mg²⁺F^2-
4. Mg¹⁺F₂^1-
The correct formula for calcium nitride is:
1. Ca²⁺N^2-
2. Ca₃²⁺N₂^3-
3. Ca₂³⁺N₃^2-
4. Ca²⁺(NO₂^1-)₂
The correct formula for sodium phosphide is:
1. Na₃¹⁺P^3-
2. Na³⁺P^3-
3. Na₃¹⁺P₃^1-
4. Na₂¹⁺P^2-
The correct formula for silver sulfide is:
1. Ag₂¹⁺S^2-
2. Ag²⁺S^2-
3. Ag₂³⁺S₃^2-
4. Ag¹⁺S^1-
The correct formula for lead(II) bromide is:
1. Pb²⁺Br₂^1-
2. Pb₂²⁺Br₄^1-
3. Fe²⁺Br₂^1-
4. Pb²⁺Br^2-
The correct name for the compound Cu₃N is:
1. copper(I) nitride
2. copper nitrogen
3. copper(II) nitrate
4. copper(III) nitride
The correct formula for potassium bromide is:
1. K¹⁺Br^1-
2. K²⁺Br^2-
3. K²⁺Br₂^1-
4. K₂¹⁺Br^2-
What is the correct formula for aluminum oxide is:
1. Al₂³⁺O₃^2-
2. Al₃³⁺O₂^2-
3. Al³⁺O₃^1-
4. Al³⁺O^3-