Oxidation Numbers and Ionic Compounds
Name: ________________________
Hour: ____ Date: ___________
Chemistry: Oxidation Numbers and Ionic Compounds
Write the correct formula for the compound formed by each of the following pairs of ions.
1. Na1+ F1- 1. ______________________
2. K1+ S2- 2. ______________________
3. Ni2+ SO42- 3. ______________________
4. Al3+ O2- 4. ______________________
5. Ca2+ ClO31- 5. ______________________
6. NH41+ P3- 6. ______________________
7. Cu1+ NO31- 7. ______________________
8. Cu2+ NO31- 8. ______________________
9. Pb4+ O2- 9. ______________________
10. Li1+ CO32- 10. ______________________
For each of the following compounds, write… A) the symbols of the ions in the compound , and B) the number of each ion in one molecule of that compound.
11. CaI2 11. ______________________
12. Na2CO3 12. ______________________
13. Ga(ClO3)3 13. ______________________
14. CuF2 14. ______________________
15. (NH4)3PO4 15. ______________________
16. FeSO4 16. ______________________
17. Mg(NO3)2 17. ______________________
18. NH4NO2 18. ______________________
19. KC2H3O2 19. ______________________
20. Na2Cr2O7 20. ______________________
KEY
Chemistry: Oxidation Numbers and Ionic Compounds
Write the correct formula for the compound formed by each of the following pairs of ions.
1. Na1+ F1- 1. NaF
2. K1+ S2- 2. K2S
3. Ni2+ SO42- 3. NiSO4
4. Al3+ O2- 4. Al2O3
5. Ca2+ ClO31- 5. Ca(ClO3) 2
6. NH41+ P3- 6. (NH4) 3P
7. Cu1+ NO31- 7. CuNO3
8. Cu2+ NO31- 8. Cu(NO3) 2
9. Pb4+ O2- 9. PbO2
10. Li1+ CO32- 10. Li2CO3
For each of the following compounds, write… A) the symbols of the ions in the compound , and B) the number of each ion in one molecule of that compound.
11. CaI2 11. Ca2+ 2 I1-
12. Na2CO3 12. 2 Na1+ CO32-
13. Ga(ClO3)3 13. Ga3+ 3 ClO31-
14. CuF2 14. Cu2+ 2 F1-
15. (NH4)3PO4 15. 3 NH41+ PO43-
16. FeSO4 16. Fe2+ SO42-
17. Mg(NO3)2 17. Mg2+ 2 NO31-
18. NH4NO2 18. NH41+ NO21-
19. KC2H3O2 19. K1+ C2H3O21-
20. Na2Cr2O7 20. 2 Na1+ Cr2O72-
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