Binary Ionic Compounds Worksheet: Part 1. Name The Following ... - Free Printable

Certainly! Let’s solve both parts of this Binary Ionic Compounds Worksheet step by step.

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## ✔ PART 1: Name the following compounds

Binary ionic compounds consist of a metal (cation) and a nonmetal (anion). To name them:

- Name the metal first (unchanged).
- Name the nonmetal second, changing its ending to “-ide”.
- If the metal can have multiple charges (like Fe, Cu, Sn, etc.), we use Roman numerals — but in this worksheet, all metals are from Group 1, 2, or Al, which have fixed charges, so no Roman numerals needed.

Let’s go one by one:

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Part 1 Answers:

1. KCl → Potassium chloride
*(K⁺ + Cl⁻)*

2. Li₂O → Lithium oxide
*(Li⁺ + O²⁻ → needs 2 Li⁺ to balance)*

3. CaBr₂ → Calcium bromide
*(Ca²⁺ + Br⁻ → needs 2 Br⁻)*

4. LiF → Lithium fluoride
*(Li⁺ + F⁻)*

5. MgBr₂ → Magnesium bromide
*(Mg²⁺ + Br⁻ → 2 Br⁻ needed)*

6. K₂O → Potassium oxide
*(K⁺ + O²⁻ → 2 K⁺ needed)*

7. ZnO → Zinc oxide
*(Zn²⁺ + O²⁻)* — Zn has fixed +2 charge.

8. SrS → Strontium sulfide
*(Sr²⁺ + S²⁻)*

9. CaS → Calcium sulfide
*(Ca²⁺ + S²⁻)*

10. Ag₂S → Silver sulfide
*(Ag⁺ + S²⁻ → 2 Ag⁺ needed)* — Silver is always +1.

11. ZnF₂ → Zinc fluoride
*(Zn²⁺ + F⁻ → 2 F⁻ needed)*

12. Ag₃N → Silver nitride
*(Ag⁺ + N³⁻ → 3 Ag⁺ needed)*

13. NaF → Sodium fluoride
*(Na⁺ + F⁻)*

14. BaO → Barium oxide
*(Ba²⁺ + O²⁻)*

15. Na₂S → Sodium sulfide
*(Na⁺ + S²⁻ → 2 Na⁺ needed)*

16. AlBr₃ → Aluminum bromide
*(Al³⁺ + Br⁻ → 3 Br⁻ needed)*

17. Li₃N → Lithium nitride
*(Li⁺ + N³⁻ → 3 Li⁺ needed)*

18. KF → Potassium fluoride
*(K⁺ + F⁻)*

19. SrI₂ → Strontium iodide
*(Sr²⁺ + I⁻ → 2 I⁻ needed)*

20. MgO → Magnesium oxide
*(Mg²⁺ + O²⁻)*

21. Al₂O₃ → Aluminum oxide
*(Al³⁺ + O²⁻ → cross charges: 2 Al³⁺ = 6+, 3 O²⁻ = 6-)*

22. CaCl₂ → Calcium chloride
*(Ca²⁺ + Cl⁻ → 2 Cl⁻ needed)*

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## ✔ PART 2: Write formulas for the following compounds

To write formulas:

- Write symbols of cation (metal) first, anion (nonmetal) second.
- Use criss-cross method: swap the charges (ignoring signs) to become subscripts.
- Simplify if possible (e.g., Mg₂O₂ → MgO).

Let’s solve each:

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Part 2 Answers:

1. sodium bromide → NaBr
*(Na⁺ + Br⁻)*

2. calcium oxide → CaO
*(Ca²⁺ + O²⁻ → 1:1 ratio)*

3. rubidium chloride → RbCl
*(Rb⁺ + Cl⁻)*

4. silver oxide → Ag₂O
*(Ag⁺ + O²⁻ → 2 Ag⁺ needed)*

5. aluminum nitride → AlN
*(Al³⁺ + N³⁻ → 1:1)*

6. zinc iodide → ZnI₂
*(Zn²⁺ + I⁻ → 2 I⁻ needed)*

7. magnesium nitride → Mg₃N₂
*(Mg²⁺ + N³⁻ → criss-cross: Mg₃N₂)*

8. calcium sulphide → CaS
*(Ca²⁺ + S²⁻ → 1:1)*

9. potassium phosphide → K₃P
*(K⁺ + P³⁻ → 3 K⁺ needed)*

10. strontium fluoride → SrF₂
*(Sr²⁺ + F⁻ → 2 F⁻ needed)*

11. sodium nitride → Na₃N
*(Na⁺ + N³⁻ → 3 Na⁺ needed)*

12. magnesium chloride → MgCl₂
*(Mg²⁺ + Cl⁻ → 2 Cl⁻ needed)*

13. beryllium chloride → BeCl₂
*(Be²⁺ + Cl⁻ → 2 Cl⁻ needed)*

14. potassium iodide → KI
*(K⁺ + I⁻)*

15. aluminum sulphide → Al₂S₃
*(Al³⁺ + S²⁻ → criss-cross: Al₂S₃)*

16. barium oxide → BaO
*(Ba²⁺ + O²⁻ → 1:1)*

17. sodium chloride → NaCl
*(Na⁺ + Cl⁻)*

18. silver bromide → AgBr
*(Ag⁺ + Br⁻)*

19. magnesium sulphide → MgS
*(Mg²⁺ + S²⁻ → 1:1)*

20. zinc chloride → ZnCl₂
*(Zn²⁺ + Cl⁻ → 2 Cl⁻ needed)*

21. zinc sulfide → ZnS
*(Zn²⁺ + S²⁻ → 1:1)*

22. cesium bromide → CsBr
*(Cs⁺ + Br⁻)*

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## 📝 Final Answer Summary

Part 1: Names

1. Potassium chloride
2. Lithium oxide
3. Calcium bromide
4. Lithium fluoride
5. Magnesium bromide
6. Potassium oxide
7. Zinc oxide
8. Strontium sulfide
9. Calcium sulfide
10. Silver sulfide
11. Zinc fluoride
12. Silver nitride
13. Sodium fluoride
14. Barium oxide
15. Sodium sulfide
16. Aluminum bromide
17. Lithium nitride
18. Potassium fluoride
19. Strontium iodide
20. Magnesium oxide
21. Aluminum oxide
22. Calcium chloride

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Part 2: Formulas

1. NaBr
2. CaO
3. RbCl
4. Ag₂O
5. AlN
6. ZnI₂
7. Mg₃N₂
8. CaS
9. K₃P
10. SrF₂
11. Na₃N
12. MgCl₂
13. BeCl₂
14. KI
15. Al₂S₃
16. BaO
17. NaCl
18. AgBr
19. MgS
20. ZnCl₂
21. ZnS
22. CsBr

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✔ All done! You now have correctly named the compounds and written their formulas using ionic compound rules. Great job practicing binary ionic nomenclature!