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

9. Quantum Mechanics

Quantum Numbers: Angular Momentum Quantum Number

General Chemistry

9. Quantum Mechanics

Quantum Numbers: Angular Momentum Quantum Number

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Multiple Choice

All of the orbitals in a given subshell have the same value as the ________ quantum number.

principal

magnetic

angular momentum

spin

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Verified step by step guidance

Understand the concept of quantum numbers: Quantum numbers are used to describe the properties of atomic orbitals and the electrons in those orbitals. There are four quantum numbers: principal (n), angular momentum (l), magnetic (m_l), and spin (m_s).

Identify the role of each quantum number: The principal quantum number (n) indicates the energy level and size of the orbital. The angular momentum quantum number (l) determines the shape of the orbital. The magnetic quantum number (m_l) specifies the orientation of the orbital in space. The spin quantum number (m_s) describes the spin direction of the electron.

Focus on the subshell concept: A subshell is defined by the angular momentum quantum number (l). All orbitals within a subshell have the same angular momentum quantum number, which determines the shape of the orbitals within that subshell.

Recognize the relationship between subshells and quantum numbers: Since all orbitals in a given subshell share the same angular momentum quantum number, this is the quantum number that remains constant across orbitals in the same subshell.

Conclude with the correct quantum number: The angular momentum quantum number (l) is the one that is the same for all orbitals in a given subshell, as it defines the subshell itself.