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 Fe(OH)2?

Iron(II) hydroxide

Iron(III) hydroxide

Ferric hydroxide

Ferrous oxide

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Verified step by step guidance

Identify the metal and its oxidation state in the compound Fe(OH)2. Here, Fe is iron, and the (OH)2 indicates two hydroxide ions, each with a charge of -1, so the total negative charge is -2. To balance this, iron must have a +2 charge.

Recall the naming conventions for transition metal compounds: when the metal can have multiple oxidation states, the oxidation state is indicated by a Roman numeral in parentheses immediately after the metal name. Since iron is +2 here, it is Iron(II).

Name the anion part of the compound. The hydroxide ion (OH-) is named 'hydroxide' in the compound name.

Combine the metal name with its oxidation state and the anion name to form the full name: 'Iron(II) hydroxide'.

Understand alternative names: 'Ferrous' is an older name for Iron(II), and 'Ferric' refers to Iron(III). Since the compound is Fe(OH)2 with iron in +2 state, 'Iron(II) hydroxide' or 'Ferrous hydroxide' are correct, but the systematic IUPAC name is 'Iron(II) hydroxide'.