Table of contents

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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

When naming ionic compounds, in which situation must you use a Roman numeral in the compound's name?

When the metal is in Group 1 or Group 2 of the periodic table

When the metal can form more than one possible positive charge (oxidation state)

When the compound contains a polyatomic ion

When the compound contains only nonmetals

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Verified step by step guidance

Understand that Roman numerals in the names of ionic compounds indicate the oxidation state (charge) of the metal cation in the compound.

Recognize that metals in Group 1 and Group 2 of the periodic table have fixed charges (+1 and +2 respectively), so they do not require Roman numerals in their names.

Identify that Roman numerals are necessary when the metal can form more than one possible positive charge (oxidation state), such as transition metals like iron, copper, or chromium.

Note that the presence of polyatomic ions or compounds containing only nonmetals does not affect the use of Roman numerals for naming metals.

Therefore, use Roman numerals in the compound's name only when the metal has multiple possible oxidation states to clearly specify which charge is present.