Ionic compound naming practice worksheet for honors chemistry students.

To solve the problem of naming or writing formulas for ionic compounds, we need to follow the rules of ionic nomenclature. Here's a step-by-step explanation and solution for each part:

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Rules for Naming Ionic Compounds:

1. Metal + Nonmetal: The metal is named first, followed by the nonmetal with an "-ide" ending.
2. Polyatomic Ions: Use the name of the polyatomic ion (e.g., sulfate, nitrate).
3. Transition Metals: Include the charge of the metal in Roman numerals if it has multiple oxidation states.
4. Acids: If the compound can form an acid, use the "-ic" or "-ous" suffixes.

Rules for Writing Formulas:

1. Charge Balance: The total positive charge must equal the total negative charge.
2. Subscripts: Use subscripts to balance charges; parentheses are used for polyatomic ions.

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Solutions:

#### Part 1: Name the Compounds (Given Formulas)
1. Na₂CO₃
- Sodium carbonate

2. NaOH
- Sodium hydroxide

3. MgBr₂
- Magnesium bromide

4. KCl
- Potassium chloride

5. FeCl₂
- Iron(II) chloride

6. FeCl₃
- Iron(III) chloride

7. Zn(OH)₂
- Zinc hydroxide

8. BeSO₄
- Beryllium sulfate

9. CrF₂
- Chromium(II) fluoride

10. Al₂S₃
- Aluminum sulfide

11. PbO
- Lead(II) oxide

12. Li₃PO₄
- Lithium phosphate

13. TlI₄
- Thallium(I) iodide

14. Co₃N₂
- Cobalt(III) nitride

15. Mg₃P₂
- Magnesium phosphide

16. Ga(NO₂)₃
- Gallium nitrite

17. Ag₂SO₃
- Silver sulfite

18. NH₄OH
- Ammonium hydroxide

19. Al(CN)₃
- Aluminum cyanide

20. Be(CH₃COO)₂
- Beryllium acetate

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#### Part 2: Write the Formulas (Given Names)
21. Sodium phosphate
- Na₃PO₄

22. Magnesium nitrate
- Mg(NO₃)₂

23. Lead(II) sulfite
- PbSO₃

24. Calcium phosphate
- Ca₃(PO₄)₂

25. Ammonium sulfate
- (NH₄)₂SO₄

26. Silver cyanide
- AgCN

27. Aluminum sulfide
- Al₂S₃

28. Beryllium chloride
- BeCl₂

29. Copper(I) arsenide
- Cu₃As

30. Iron(III) oxide
- Fe₂O₃

31. Gallium nitride
- GaN

32. Iron(II) bromide
- FeBr₂

33. Vanadium(V) phosphate
- VPO₄

34. Calcium oxide
- CaO

35. Magnesium acetate
- Mg(CH₃COO)₂

36. Aluminum sulfate
- Al₂(SO₄)₃

37. Copper(I) carbonate
- Cu₂CO₃

38. Barium oxide
- BaO

39. Ammonium sulfite
- (NH₄)₂SO₃

40. Silver bromide
- AgBr

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Final Answer:

\[
\boxed{
\begin{array}{ll}
\text{Name} & \text{Formula} \\
\hline
1. \text{Na₂CO₃} & \text{Sodium carbonate} \\
2. \text{NaOH} & \text{Sodium hydroxide} \\
3. \text{MgBr₂} & \text{Magnesium bromide} \\
4. \text{KCl} & \text{Potassium chloride} \\
5. \text{FeCl₂} & \text{Iron(II) chloride} \\
6. \text{FeCl₃} & \text{Iron(III) chloride} \\
7. \text{Zn(OH)₂} & \text{Zinc hydroxide} \\
8. \text{BeSO₄} & \text{Beryllium sulfate} \\
9. \text{CrF₂} & \text{Chromium(II) fluoride} \\
10. \text{Al₂S₃} & \text{Aluminum sulfide} \\
11. \text{PbO} & \text{Lead(II) oxide} \\
12. \text{Li₃PO₄} & \text{Lithium phosphate} \\
13. \text{TlI₄} & \text{Thallium(I) iodide} \\
14. \text{Co₃N₂} & \text{Cobalt(III) nitride} \\
15. \text{Mg₃P₂} & \text{Magnesium phosphide} \\
16. \text{Ga(NO₂)₃} & \text{Gallium nitrite} \\
17. \text{Ag₂SO₃} & \text{Silver sulfite} \\
18. \text{NH₄OH} & \text{Ammonium hydroxide} \\
19. \text{Al(CN)₃} & \text{Aluminum cyanide} \\
20. \text{Be(CH₃COO)₂} & \text{Beryllium acetate} \\
\hline
21. \text{Sodium phosphate} & \text{Na₃PO₄} \\
22. \text{Magnesium nitrate} & \text{Mg(NO₃)₂} \\
23. \text{Lead(II) sulfite} & \text{PbSO₃} \\
24. \text{Calcium phosphate} & \text{Ca₃(PO₄)₂} \\
25. \text{Ammonium sulfate} & \text{(NH₄)₂SO₄} \\
26. \text{Silver cyanide} & \text{AgCN} \\
27. \text{Aluminum sulfide} & \text{Al₂S₃} \\
28. \text{Beryllium chloride} & \text{BeCl₂} \\
29. \text{Copper(I) arsenide} & \text{Cu₃As} \\
30. \text{Iron(III) oxide} & \text{Fe₂O₃} \\
31. \text{Gallium nitride} & \text{GaN} \\
32. \text{Iron(II) bromide} & \text{FeBr₂} \\
33. \text{Vanadium(V) phosphate} & \text{VPO₄} \\
34. \text{Calcium oxide} & \text{CaO} \\
35. \text{Magnesium acetate} & \text{Mg(CH₃COO)₂} \\
36. \text{Aluminum sulfate} & \text{Al₂(SO₄)₃} \\
37. \text{Copper(I) carbonate} & \text{Cu₂CO₃} \\
38. \text{Barium oxide} & \text{BaO} \\
39. \text{Ammonium sulfite} & \text{(NH₄)₂SO₃} \\
40. \text{Silver bromide} & \text{AgBr} \\
\end{array}
}
\]