Electron Configuration Practice

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Electron Configuration Practice

The following questions are on electrons and electron configuration, it may be useful to review the associated material.


Questions and Answers
  • 1. 
    The "up" and "down" arrows in electron orbital notation depict
    • A. 

      Electrons with opposite charges

    • B. 

      Electrons with opposite spins

    • C. 

      Protons & neutrons

    • D. 

      protons & electrons

  • 2. 
    Which atomic sub-level will follow the 5d? 
    • A. 

      6s

    • B. 

      6p

    • C. 

      5f

    • D. 

      4f

  • 3. 
    What neutral atom is represented by the following configuration: 1s2,2s2,2p6,3s2,3p6,4s2,3d10?
    • A. 

      Iron

    • B. 

      Zinc

    • C. 

      Aluminum

    • D. 

      Copper

  • 4. 
    What neutral atom is represented by the following configuration: 1s2,2s2,2p6,3s2,3p6,4s2,3d10,4p4? 
    • A. 

      Silicon

    • B. 

      Selenium

    • C. 

      Silver

    • D. 

      Sulfur

  • 5. 
    What neutral atom is represented by the following configuration: 1s2,2s2,2p6,3s2,3p1? 
    • A. 

      Aluminum

    • B. 

      Sodium

    • C. 

      Boron

    • D. 

      Silicon

  • 6. 
    What neutral atom is represented by the following configuration: 1s2,2s2,2p6,3s2,3p6,4s2,3d10,4p6,5s2,4d10,5p5? 
    • A. 

      Iodine

    • B. 

      Bromine

    • C. 

      Zinc

    • D. 

      Lead

  • 7. 
    Which of the following noble gas configurations is correct for potassium?
    • A. 

      (Kr)4s1

    • B. 

      (Kr)3s1

    • C. 

      (Ar)4s1

    • D. 

      (Ar)3s1

  • 8. 
    Which of the following noble gas configurations is correct for chlorine?
    • A. 

      (Ar)2s2,2p5

    • B. 

      (Ne)2s2,2p5

    • C. 

      (Ar)3s2,3p5

    • D. 

      (Ne)3s2,3p5

  • 9. 
    Which of the following noble gas configurations is correct for iron? 
    • A. 

      (Kr)5s2,4d3

    • B. 

      (Kr)5s2,4d5

    • C. 

      (Ar)4s2,4d6

    • D. 

      (Ar)5s2,4d3