Quantum Numbers Worksheet
A Grade 12 Chemistry worksheet covering the four quantum numbers and their significance in describing atomic orbitals and electron configurations.
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Quantum Numbers Worksheet
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Read each question carefully and provide the best answer based on your understanding of quantum numbers and atomic structure.
1. Which quantum number describes the main energy level of an electron?
Magnetic quantum number (m_l)
Principal quantum number (n)
Angular momentum quantum number (l)
Spin quantum number (m_s)
2. What are the possible values for the angular momentum quantum number (l) when n = 3?
0, 1, 2
1, 2, 3
-2, -1, 0, 1, 2
0, 1, 2, 3
3. The quantum number specifies the orientation of an atomic orbital in space.
4. For a d-orbital, the angular momentum quantum number (l) has a value of .
5. An electron with a principal quantum number (n) of 1 can have an angular momentum quantum number (l) of 1.
True
False
6. The spin quantum number (m_s) can have values of +1/2 or -1/2.
True
False
7. List the four quantum numbers and briefly describe what each one represents.
8. Examine the image of atomic orbitals below. For an electron in a p-orbital, what are the possible values for the magnetic quantum number (m_l)?
Match each quantum number with the property it describes.
9. Principal quantum number
a. Orientation of orbital in space
10. Angular momentum quantum number
b. Electron spin
11. Magnetic quantum number
c. Main energy level and size
12. Spin quantum number
d. Shape of orbital and subshell
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