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

2. Atoms & Elements

Subatomic Particles

General Chemistry

2. Atoms & Elements

Subatomic Particles

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Multiple Choice

Which of the following has the largest number of neutrons?

²⁰Ne

³⁵Cl

³²S

¹⁹F

All have the same number of neutrons.

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Verified step by step guidance

Identify the atomic number and mass number for each element. The atomic number is the number of protons, and the mass number is the sum of protons and neutrons.

For 20Ne: The atomic number is 10 (Neon), and the mass number is 20. Calculate the number of neutrons using the formula: Neutrons = Mass number - Atomic number.

For 35Cl: The atomic number is 17 (Chlorine), and the mass number is 35. Calculate the number of neutrons using the same formula.

For 32S: The atomic number is 16 (Sulfur), and the mass number is 32. Calculate the number of neutrons using the same formula.

For 19F: The atomic number is 9 (Fluorine), and the mass number is 19. Calculate the number of neutrons using the same formula. Compare the number of neutrons for each element to determine which has the largest number.