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Electron Configurations & the Four Quantum Numbers

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Choose an answer and hit 'next'. You will receive your score and answers at the end.

question 1 of 3

Iron (Fe) has 26 electrons. Using Madelung's rule, what is iron's electron configuration?

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1. Which of the following is NOT true about the principal quantum number?

2. The angular momentum quantum number (l), which tells us the shape of the electron orbitals, is determined by the principal quantum number (n). If we have a value of 2 for n, what will we get for our values of l?

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About This Quiz & Worksheet

This quiz/worksheet combo allows you to check what you know about electron configurations and the four quantum numbers. You must apply your knowledge of Madelung's rule and understand the structure of electrons in order to do well on this quiz.

Quiz & Worksheet Goals

For this quiz, you will need to:

  • Use Madelung's rule to determine iron's electron configuration
  • Recognize true and false statements about the principal quantum number
  • Apply your knowledge of the angular momentum and principal quantum numbers to solve a given problem
  • Name which quantum number the number of orientations is dependent on
  • Describe a fact about the spins of two paired electrons in an orbital

Skills Practiced

  • Problem solving - use acquired knowledge to solve quantum number practice problems
  • Information recall - access the knowledge you've gained regarding Madelung's rule
  • Knowledge application - use your knowledge to answer questions about the principal quantum number

Additional Learning

Expand your understanding of this topic by reviewing the lesson titled Electron Configurations & the Four Quantum Numbers. You can find out more about:

  • What each element is defined by
  • What information is determined by electron configuration
  • How an orbital is defined
  • What two things the principal quantum number tells us
  • How the Pauli exclusion principal is upheld
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