Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

3. Chemical Reactions

Naming Ionic Compounds

General Chemistry

3. Chemical Reactions

Naming Ionic Compounds

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Multiple Choice

In which of the following is the name and formula given correctly for an ionic compound?

Sodium chloride, NaCl

Potassium sulfide, KSO4

Calcium nitrate, CaNO2

Magnesium oxide, MgO2

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Verified step by step guidance

Step 1: Understand that ionic compounds are formed between metals and nonmetals, where the metal forms a cation and the nonmetal forms an anion. The formula must reflect the correct ratio of ions to balance the overall charge to zero.

Step 2: Analyze the given names and formulas by identifying the ions involved and their charges. For example, sodium (Na) forms a +1 cation, and chloride (Cl) forms a -1 anion, so the formula NaCl is correct because the charges balance.

Step 3: Check potassium sulfide: potassium (K) forms a +1 cation, and sulfide (S) forms a -2 anion. To balance charges, the formula should be K2S, not KSO4, which contains sulfate (SO4) and is incorrect for sulfide.

Step 4: Check calcium nitrate: calcium (Ca) forms a +2 cation, and nitrate (NO3) forms a -1 anion. The correct formula should be Ca(NO3)2 to balance charges, not CaNO2, which corresponds to nitrite, not nitrate.

Step 5: Check magnesium oxide: magnesium (Mg) forms a +2 cation, and oxide (O) forms a -2 anion. The correct formula is MgO, not MgO2, because one Mg2+ balances one O2-.