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

Which of the following is the correct chemical formula for zinc fluoride?

ZnF

Zn_2F_3

ZnF_2

Zn_2F

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Verified step by step guidance

Identify the charges of the ions involved: Zinc (Zn) typically forms a +2 charge as Zn^{2+}, and fluoride (F) forms a -1 charge as F^{-}.

Determine the ratio of ions needed to balance the overall charge to zero. Since Zn^{2+} has a +2 charge and F^{-} has a -1 charge, two fluoride ions are needed to balance one zinc ion.

Write the chemical formula by combining one Zn^{2+} ion with two F^{-} ions, resulting in ZnF_2.

Verify that the total positive charge (+2 from Zn) and total negative charge (2 × -1 from F) sum to zero, confirming the compound is electrically neutral.

Conclude that the correct chemical formula for zinc fluoride is ZnF_2, as it reflects the proper ionic charges and ratio.