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

What is the correct name for the compound with the formula Al(NO2)3?

Aluminum trinitrate

Aluminum nitrate

Aluminum nitrite

Aluminum nitride

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Verified step by step guidance

Identify the ions present in the compound Al(NO2)3. The cation is Al³⁺ (aluminum ion), and the anion is NO2⁻.

Determine the name of the anion NO2⁻. This is the nitrite ion, which is different from nitrate (NO3⁻) and nitride (N³⁻).

Combine the name of the cation and the anion. Since aluminum is a metal with a fixed charge of +3, its name remains 'aluminum' without a Roman numeral.

Since there are three nitrite ions balancing the charge of one aluminum ion, the compound is named by stating the cation followed by the anion with the appropriate prefix if needed. Here, 'aluminum nitrite' is correct because the prefix 'tri-' is generally omitted for the cation and the anion name already implies the number of ions.

Verify that the name matches the formula: Al(NO2)3 corresponds to aluminum nitrite, not aluminum nitrate (NO3⁻), aluminum trinitrate (which is not a correct name), or aluminum nitride (which would be AlN).