Grade 11 Chemistry: Electron Arrangements
Explore electron configurations, orbital diagrams, and quantum numbers for Grade 11 Chemistry students.
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Electron Arrangements Worksheet
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Read each question carefully and provide accurate answers based on your knowledge of electron arrangements.
1. Which principle states that an electron occupies the lowest energy orbital that can receive it?
Hund's Rule
Pauli Exclusion Principle
Aufbau Principle
Heisenberg Uncertainty Principle
2. The maximum number of electrons that can occupy a single atomic orbital is .
3. The four quantum numbers are the principal quantum number (n), the azimuthal quantum number (l), the magnetic quantum number (ml), and the quantum number (ms).
4. Write the full electron configuration for an atom of Oxygen (atomic number 8).
5. Explain what Hund's Rule states regarding electron arrangement in orbitals of equal energy.
6. Draw the orbital diagram for Nitrogen (atomic number 7). Use arrows to represent electrons.
7. The Pauli Exclusion Principle states that no two electrons in the same atom can have the same set of four quantum numbers.
True
False
8. Observe the diagram below, which illustrates the electron cloud model of an atom. Briefly describe what the varying density of the cloud represents.
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