Solved Exercise 1: Nomenclature Practice In this exercise, | Chegg.com - Free Printable

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, etc.), use Roman numerals in parentheses to indicate the charge.
3. Anions end in -ide (e.g., chloride, oxide).
4. Polyatomic ions have specific names (e.g., sulfate = SO₄²⁻, nitrate = NO₃⁻, etc.).

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Solutions:

1. Pb(SO₄)₂
- Pb is lead; it has variable charges.
- SO₄²⁻ is sulfate (charge = -2).
- Two SO₄ groups → total negative charge = 4-.
- So Pb must be +4 → Lead(IV) sulfate

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

3. Mn₂(SO₃)₃
- Mn is manganese (variable charge).
- SO₃²⁻ is sulfite.
- Three SO₃²⁻ → total charge = 6–
- Two Mn atoms → each must be +3 → Mn³⁺
- Name: Manganese(III) sulfite

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

5. Mn(ClO₃)₂
- Mn has variable charge.
- ClO₃⁻ is chlorate.
- Two ClO₃⁻ → total charge = 2–
- So Mn is +2 → Mn²⁺
- Name: Manganese(II) chlorate

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

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

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

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

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

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

12. CoCl₂
- Co is cobalt (variable charge).
- Cl⁻ is chloride.
- Two Cl⁻ → total charge = 2–
- So Co is +2 → Co²⁺
- Name: 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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