Electrons In Atoms 10/21/10

27 Questions | Total Attempts: 258

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Atom Quizzes & Trivia

Electrons in Atoms 10/21/10


Questions and Answers
  • 1. 
    The number of wave cycles that pass a given point perunit of time
    • A. 

      Energy level

    • B. 

      Frequency

    • C. 

      Amplitude

  • 2. 
    The SI unit of frequency
    • A. 

      Spectrem

    • B. 

      Wavelength

    • C. 

      Hertz

  • 3. 
    Lines of colored light obtained by passing the lightemitted by an element through a prism
    • A. 

      Quantum of energy

    • B. 

      Aufbau principle

    • C. 

      Atomic emmission spectrum

  • 4. 
    The region around an atomic nucleus where an electronis likely to be moving
    • A. 

      Atomic emission spectrum

    • B. 

      Energy level

    • C. 

      Frequency

  • 5. 
    A range of colors seen when light passes through a prism
    • A. 

      Spectrum

    • B. 

      Atomic orbital

    • C. 

      Frequency

  • 6. 
    Electrons enter orbitals of lowest energy first.
    • A. 

      Aufbau principle

    • B. 

      Frequency

    • C. 

      Hertz

  • 7. 
    A region outside the nucleus where there is highprobability of finding an electron
    • A. 

      Amplitude

    • B. 

      Spectrum

    • C. 

      Atomic orbital

  • 8. 
    The amount of energy required to move an electron from one energy level to the next higher one
    • A. 

      Quantum of energy

    • B. 

      Energy level

    • C. 

      Wavelength

  • 9. 
    The distance between crests of waves
    • A. 

      Wavelength

    • B. 

      Amplitude

    • C. 

      Energy level

  • 10. 
    The height of a wave from the origin to the crest
    • A. 

      Hertz

    • B. 

      Spectrum

    • C. 

      Amplitude

  • 11. 
    The fourth principal energy level has
    • A. 

      4 orbitals.

    • B. 

      16 orbitals.

    • C. 

      32 orbitals.

    • D. 

      9 orbitals.

  • 12. 
    If the electron configuration of an element is Is22s22p63s23p5, the element is
    • A. 

      Iron.

    • B. 

      Bromine.

    • C. 

      Chlorine.

    • D. 

      phosphorus.

  • 13. 
    The quantum mechanical model of the atom
    • A. 

      Is concerned with the probability of finding an electron in a certain position.

    • B. 

      Was proposed by Neils Bohr.

    • C. 

      Defines the exact path of an electron around the nucleus.

    • D. 

      Has many analogies in the visible world.

  • 14. 
    The electron configuration of calcium is
    • A. 

      Is2 2s2 2p2 3s2 3p3 4s2.

    • B. 

      1s2 2s2 2p10 3s2 3p4

    • C. 

      Is2 2s2 2p 3s2 3p6 3d8.

    • D. 

      1s2 2s2 2p6 3s2 3p6 4s2

  • 15. 
    The maximum number of electrons that can occupy the third principal energy level is
    • A. 

      18.

    • B. 

      32.

    • C. 

      2.

    • D. 

      8.

  • 16. 
    As the frequency of light increases, the wavelength
    • A. 

      Increases.

    • B. 

      Remains the same.

    • C. 

      Decreases.

    • D. 

      Approaches the speed of light.

  • 17. 
    The formula 2n2 represents
    • A. 

      The number of sublevels in any energy level.

    • B. 

      The maximum number of electrons that can occupy an energy level.

    • C. 

      The number of orbitals in a sublevel.

    • D. 

      None of the above

  • 18. 
    In order to occupy the same orbital, two electrons must have
    • A. 

      The same direction of spin.

    • B. 

      Low energy.

    • C. 

      Opposite charge.

    • D. 

      Opposite spin.

  • 19. 
    Stable electron configurations are likely to contain
    • A. 

      High-energy electrons.

    • B. 

      Unfilled s orbitals.

    • C. 

      Fewer electrons than unstable configurations.

    • D. 

      Filled energy sublevels.

  • 20. 
    According to Hund's rule, when electrons occupy orbitals of equal energy, one electron enters each orbit until
    • A. 

      All the orbitals contain one electron, with spins parallel.

    • B. 

      All the orbitals contain one electron, with opposite spins.

    • C. 

      There are two electrons in each orbital.

    • D. 

      Electron velocities become constant..

  • 21. 
     Identify the elements that have the following electron configurations.            Is22s22p63s23pl
    • A. 

      Cobalt

    • B. 

      Aluminum

    • C. 

      Krypton

  • 22. 
     Identify the elements that have the following electron configurationsI^2s22p63s23p63dw4s24p6
    • A. 

      Aluminum

    • B. 

      Cobolt

    • C. 

      Krypton

  • 23. 
    Identify the elements that have the following electron configurations.  Is22s22p63s23p63d74si
    • A. 

      Aluminum

    • B. 

      Krypton

    • C. 

      Cobalt

  • 24. 
    Consider the elements neon, bromine, and phosphorus. Which has  three electrons in its 3p sublevel?
    • A. 

      Phosphorus

    • B. 

      Bromine

    • C. 

      Neon

  • 25. 
    Consider the elements neon, bromine, and phosphorus. Which has its highest energy level completely filled?
    • A. 

      Bromine

    • B. 

      Phosphorus

    • C. 

      Neon

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