Practice naming ionic compounds with this chemistry worksheet exercise.

Let's go through Part I: Ionic Compounds step by step, naming or writing formulas as required.

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Rules for Naming Ionic Compounds:

1. Cation (positive ion) first, then anion (negative ion).
2. For metals that can have multiple charges (like Pb, Mn, Co), use Roman numerals in parentheses to indicate the charge.
3. Anions end in "-ide" (e.g., chloride, oxide).
4. For polyatomic ions, use their standard names (e.g., sulfate = SO₄²⁻, nitrate = NO₃⁻).

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Solutions:

1. Pb(SO₄)₂
- Pb is lead; SO₄²⁻ is sulfate.
- Since there are two SO₄²⁻ ions (total charge = -2 × 2 = -4), Pb must be +4.
- So, Lead(IV) sulfate

2. Be(HCO₃)₂
- Be²⁺ is beryllium, HCO₃⁻ is bicarbonate.
- Beryllium bicarbonate

3. Mn₂(SO₃)₃
- Mn is manganese, SO₃²⁻ is sulfite.
- Two Mn and three SO₃²⁻ → total anion charge = 3 × (-2) = -6
- So each Mn must be +3 (since 2 × +3 = +6).
- Manganese(III) sulfite

4. Al(CN)₃
- Al³⁺ is aluminum, CN⁻ is cyanide.
- Aluminum cyanide

5. Mn(ClO₃)₂
- Mn is manganese, ClO₃⁻ is chlorate.
- Two ClO₃⁻ → total charge = -2, so Mn is +2.
- Manganese(II) chlorate

6. Mg(ClO₂)₂
- Mg²⁺ is magnesium, ClO₂⁻ is chlorite.
- Magnesium chlorite

7. BaSO₄
- Ba²⁺ is barium, SO₄²⁻ is sulfate.
- Barium sulfate

8. KI
- K⁺ is potassium, I⁻ is iodide.
- Potassium iodide

9. NaCl
- Na⁺ is sodium, Cl⁻ is chloride.
- Sodium chloride

10. MgCl₂
- Mg²⁺ is magnesium, Cl⁻ is chloride.
- Magnesium chloride

11. Na₃N
- Na⁺ is sodium, N³⁻ is nitride.
- Sodium nitride

12. CoCl₂
- Co is cobalt, Cl⁻ is chloride.
- Two Cl⁻ → total -2 charge → Co is +2.
- Cobalt(II) chloride

13. Lithium bromide
- Li⁺ is lithium, Br⁻ is bromide.
- Formula: LiBr

14. Lead(II) oxide
- Pb²⁺ is lead(II), O²⁻ is oxide.
- Formula: PbO

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✔ Final Answers:

1. Lead(IV) sulfate
2. Beryllium bicarbonate
3. Manganese(III) sulfite
4. Aluminum cyanide
5. Manganese(II) chlorate
6. Magnesium chlorite
7. Barium sulfate
8. Potassium iodide
9. Sodium chloride
10. Magnesium chloride
11. Sodium nitride
12. Cobalt(II) chloride
13. LiBr
14. PbO

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Let me know if you'd like help with Part II: Molecular Compounds too!