Naming and writing formulas for ionic compounds worksheet | Live ... - Free Printable

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

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Rules for Naming Ionic Compounds:

1. Binary Ionic Compounds:
- The first element is named as is (metal or positive ion).
- The second element ends with "-ide" (nonmetal or negative ion).
- If the metal has multiple oxidation states, use Roman numerals to specify the charge.

2. Polyatomic Ions:
- Recognize common polyatomic ions (e.g., sulfate, nitrate, phosphate).
- Use the name of the polyatomic ion directly.

3. Acids:
- If the anion ends in "-ate," the acid name starts with "hydro-" and ends with "-ic acid."
- If the anion ends in "-ite," the acid name starts with "hydro-" and ends with "-ous acid."

4. Formula Writing:
- Balance the charges of the cation and anion to ensure the compound is neutral.
- Use subscripts to indicate the number of atoms or ions.

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Solution:

#### Part 1: Write the Name for Each Formula
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(II) 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 Formula for Each Name
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:

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