Lesson Worksheet: Quantum Numbers Chemistry • 10th Grade

In this worksheet, we will practice assigning quantum numbers to atomic orbitals and relating these values to the orbital nodes, energies, and degeneracies.


What percentage of the orbitals in the 𝑛=4 shell of an atom are d orbitals?


What is the maximum number of electrons that can occupy a shell with 𝑛=5?


How many degenerate orbitals are there in a subshell with the quantum numbers 𝑛 and 𝑙?

  • A2𝑙+1
  • B2𝑙1
  • C2𝑛+1
  • D2(𝑙+𝑛)+1
  • E2𝑛1


How many subshells are there in a shell with the quantum number 𝑛?

  • A𝑛+1
  • B𝑛
  • C𝑛
  • D𝑛1
  • E𝑛1

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