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

Which is the correct name for the compound Na3P?

sodium phosphorus

sodium phosphate

trisodium phosphate

sodium phosphide

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Verified step by step guidance

Identify the elements in the compound Na3P: Na is sodium, and P is phosphorus.

Determine the charges of the ions: Sodium (Na) typically forms a +1 cation (Na\^+), and phosphorus in this context forms an anion with a charge of -3 (P\^{3-}).

Combine the ions in a ratio that balances the total positive and negative charges. Here, three Na\^+ ions balance one P\^{3-} ion, giving the formula Na3P.

Name the compound by naming the cation first (sodium) and then the anion. For the anion, phosphorus forms the phosphide ion when combined with metals, so the correct name is sodium phosphide.

Confirm that the other options are incorrect: 'sodium phosphorus' is not a proper ionic compound name, 'sodium phosphate' refers to a polyatomic ion (PO4\^{3-}), and 'trisodium phosphate' is Na3PO4, which is different from Na3P.