Grade 12 Chemistry: Electron Arrangements
Explore the principles of electron configurations, orbital diagrams, quantum numbers, and their implications for chemical properties.
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Electron Arrangements Worksheet
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Date:
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Read each question carefully and provide your best answer. Show all work where applicable.
1. Which of the following principles states that each electron in an atom has a unique set of four quantum numbers?
Hund's Rule
Aufbau Principle
Pauli Exclusion Principle
Heisenberg Uncertainty Principle
2. The maximum number of electrons that can occupy a single atomic orbital is .
3. Orbitals with the same principal quantum number (n) belong to the same electron .
4. The shape of an s-orbital is .
5. Write the full electron configuration for a neutral atom of Oxygen (O).
6. Explain the difference between electron configuration and orbital diagram.
7. The magnetic quantum number (ml) describes the orientation of an orbital in space.
True
False
8. Draw the orbital diagram for Nitrogen (N). Use arrows to represent electrons.
Match the quantum number with what it describes.
9. Principal Quantum Number (n)
a. Electron spin
10. Angular Momentum Quantum Number (l)
b. Energy level and size of orbital
11. Magnetic Quantum Number (ml)
c. Shape of orbital
12. Spin Quantum Number (ms)
d. Orientation of orbital in space
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