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 chemical formula for the compound formed between beryllium and the nitrite ion?

Be(NO2)2

Be(NO3)2

Be2(NO2)3

Be2(NO3)2

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Verified step by step guidance

Identify the charge of the beryllium ion. Beryllium (Be) is in group 2 of the periodic table, which means it typically forms a +2 cation, represented as Be²⁺.

Identify the charge of the nitrite ion. The nitrite ion is NO₂^-, which carries a -1 charge.

Determine the ratio of beryllium ions to nitrite ions needed to balance the charges. Since beryllium has a +2 charge and nitrite has a -1 charge, you will need two nitrite ions to balance one beryllium ion.

Write the chemical formula by combining the ions in the correct ratio. The formula will be Be(NO₂)₂, indicating one beryllium ion and two nitrite ions.

Verify the chemical formula by checking the charge balance. The total positive charge from one Be²⁺ is +2, and the total negative charge from two NO₂^- ions is -2, which balances to zero, confirming the formula is correct.