Chapter 28: Quantum Mechanics Of Atoms

45 Questions | Total Attempts: 362

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Chapter 28: Quantum Mechanics Of Atoms - Quiz

Questions and Answers
  • 1. 
    The probability of finding an electron in a hydrogen atom is directly proportional to its
    • A. 

      Energy.

    • B. 

      Momentum.

    • C. 

      Wave function.

    • D. 

      Square of the wave function.

  • 2. 
    The reason the position of a particle cannot be specified with infinite precision is the
    • A. 

      Exclusion principle.

    • B. 

      Uncertainty principle.

    • C. 

      Photoelectric effect.

    • D. 

      Principle of relativity.

  • 3. 
    If the accuracy in measuring the position of a particle increases, the accuracy in measuring its velocity will
    • A. 

      Increase.

    • B. 

      Decrease.

    • C. 

      Remain the same.

    • D. 

      Be uncertain.

  • 4. 
    If the accuracy in measuring the velocity of a particle increases, the accuracy in measuring its position will
    • A. 

      Increase.

    • B. 

      Decrease.

    • C. 

      Remain the same.

    • D. 

      Be uncertain.

  • 5. 
    The quantity "h-bar" has a value of
    • A. 

      1.055 * 10^(-34) J*s.

    • B. 

      6.626 * 10^(-34) J*s.

    • C. 

      8.85 * 10^(-12) J*s.

    • D. 

      8.988 * 10^9 J*s.

  • 6. 
    The principal quantum number can have any integer value ranging from
    • A. 

      -∞ to +∞.

    • B. 

      0 to ∞.

    • C. 

      1 to ∞.

    • D. 

      1 to 100.

  • 7. 
    The orbital quantum number can have any integer value ranging from
    • A. 

      0 to n.

    • B. 

      0 to (n-1).

    • C. 

      1 to n.

    • D. 

      1 to (n+1).

  • 8. 
    The magnetic quantum number can have any integer value ranging from
    • A. 

      -n to +n.

    • B. 

      -l to +l.

    • C. 

      0 to n.

    • D. 

      0 to l.

  • 9. 
    The spin quantum number can have values of
    • A. 

      -1/2, -1, 0, +1, +1/2

    • B. 

      -1/2, -1, +1, +1/2

    • C. 

      -1/2, 0, +1/2

    • D. 

      -1/2, +1/2

  • 10. 
    If l = 4, which one of the following is a possible quantum number for n?
    • A. 

      0

    • B. 

      2

    • C. 

      4

    • D. 

      8

  • 11. 
    If n = 5, which one of the following is not an allowed magnetic quantum number?
    • A. 

      0

    • B. 

      2

    • C. 

      4

    • D. 

      5

  • 12. 
    The wave equation for hydrogen has solutions only if the three quantum numbers n, l, and m_l meet certain conditions. One of these conditions specifies that n
    • A. 

      Can be any real number.

    • B. 

      Can be any non-negative integer.

    • C. 

      Can be any integer.

    • D. 

      Can be any positive integer.

  • 13. 
    The wave equation for hydrogen has solutions only if the three quantum numbers n, l, and m_l meet certain conditions. One of these conditions specifies that m_l
    • A. 

      Has an absolute value either equal to or less than l.

    • B. 

      Is equal to or less than n.

    • C. 

      Is equal to or greater than 1.

    • D. 

      Can be any integer.

  • 14. 
    In the ground state, the quantum numbers (n, l, m_l, m_s) for hydrogen are, respectively,
    • A. 

      1, 1, 1, 1.

    • B. 

      1, 0, 0, 0.

    • C. 

      1, 0, 0, ±1/2.

    • D. 

      1, 1, 1, ±1/2.

  • 15. 
    According to the selection rule, when a photon is emitted or absorbed, transitions can only occur between state with values of l that differ by
    • A. 

      Four units.

    • B. 

      Three units.

    • C. 

      Two units.

    • D. 

      One unit.

  • 16. 
    The number of electrons in a neutral atom is called its
    • A. 

      Principal quantum number.

    • B. 

      Orbital quantum number.

    • C. 

      Magnetic quantum number.

    • D. 

      Atomic number.

  • 17. 
    In terms of an atom's electron configuration, the letters K, L, M, and N refer to
    • A. 

      Different shells with n equal to 1, 2, 3, or 4 respectively.

    • B. 

      Different sub shells with l equal to 1, 2, 3, or 4 respectively.

    • C. 

      The four possible levels for the magnetic quantum number.

    • D. 

      The four possible quantum numbers.

  • 18. 
    What is the maximum number of electrons that can occupy the g sub shell?
    • A. 

      10

    • B. 

      14

    • C. 

      18

    • D. 

      22

  • 19. 
    How many possible sets of quantum numbers or electron states are there in the 5f sub shell?
    • A. 

      2

    • B. 

      8

    • C. 

      10

    • D. 

      14

  • 20. 
    The elements in the periodic table that have completely filled shells or subshells are referred to as
    • A. 

      Noble gases.

    • B. 

      Halogens.

    • C. 

      Alkali metals.

    • D. 

      Transition elements.

  • 21. 
    The elements in the periodic table which lack one electron from a filled shell are referred to as
    • A. 

      Noble gases.

    • B. 

      Halogens.

    • C. 

      Alkali metals.

    • D. 

      Transition elements.

  • 22. 
    The elements in the periodic table which have a single outer s electron are referred to as
    • A. 

      Noble gases.

    • B. 

      Halogens.

    • C. 

      Alkali metals.

    • D. 

      Transition elements.

  • 23. 
    The word LASER is an acronym for
    • A. 

      Light Altered Spectra of Energy Radiated.

    • B. 

      Latent Source of Enhanced Radiation.

    • C. 

      Light Amplification by the Stimulated Emission of Radiation.

    • D. 

      Light Absorbed States of Energetic Resonance.

  • 24. 
    In order to produce a hologram, one needs, in addition to an object and a piece of photographic film,
    • A. 

      A beam of monochromatic light and a mirror.

    • B. 

      A beam of monochromatic light and a lens.

    • C. 

      A beam of coherent light and a lens.

    • D. 

      A beam of coherent light and a mirror.

  • 25. 
    When a hologram is illuminated with a beam of coherent light, it produces
    • A. 

      Both a real and a virtual image.

    • B. 

      Only a real image of the object.

    • C. 

      Only a virtual image of the object.

    • D. 

      None of the given answers

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