5. Electron Test Period 8

25 Questions | Total Attempts: 47

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5. Electron Test Period 8

Questions and Answers
  • 1. 
    The electron was first proposed to exist based primarily on the results of which experiment?
    • A. 

      Thomson's cathode ray tube experiment

    • B. 

      Rutherford's gold foil experiment

    • C. 

      Bohr's interpretation of the balmer formula

    • D. 

      Frankensteins Transylvania experiments with lightning and corpses

  • 2. 
    The electron was first proposed to exist outside the nucleus based on which key experiment?
    • A. 

      Thomson's cathode ray tube experiment

    • B. 

      Rutherfords gold foil experiment

    • C. 

      Bohrs interpretation of the balmer formula

    • D. 

      Tony Starks creation of a new element for his arc reactor

  • 3. 
    Which key experiment or observation resulted in the concept that electrons reside in shells?
    • A. 

      Thomson's cathode ray tube experiment

    • B. 

      Rutherford's gold foil experiment

    • C. 

      Bohr's interpretation of the Balmer Formula as it relates to atomic emission spectra

    • D. 

      Professor Utonium's experiments with chemical x. leading to the creation of the power puff girls

  • 4. 
    What is the relationship between energy, frequency and wavelength for the electromagnetic spectrum?
    • A. 

      As the wavelength of light increases, the frequency decreases and the energy decreases

    • B. 

      As the wavelength of light increases, the frequency decreases and the energy increases

    • C. 

      As the wavelength of light increases, the frequency increases and the energy decreases

    • D. 

      As the wavelength of light increases, the frequency increases and the energy increases

  • 5. 
    Which units, in order, refer to wavelength, frequency, and energy?
    • A. 

      Meters, 1/s, and joules

    • B. 

      Meters, seconds, and joules

    • C. 

      Meters, hertz, and candelas

    • D. 

      Meters, amperes, and joules

  • 6. 
    What frequency of light is produced when a hydrogen electron travels from the 9th to the fourth shell? Please choose the closest answer.
    • A. 

      0.0515 Hz

    • B. 

      1818 Hz

  • 7. 
    Which of the following atoms contains an unfilled third shell of electrons?
    • A. 

      Zinc, atomic number 30

    • B. 

      Copper, atomic number 29

    • C. 

      Gold, atomic number 79

    • D. 

      Uranium, atomic number 92

  • 8. 
    How many electrons are in the fourth shell of the yttrium anion (Y-)
    • A. 

      2

    • B. 

      6

    • C. 

      8

    • D. 

      10

  • 9. 
    Element 121 is likely to be discovered in the next ten years or so. What will its ending electron configuration be?The table below may be of assistance: Electron ConfigurationPattern: s2 p6 d10 f14 g18 h22 i26… total running count  of electrons1s2           2 (He) 2s2          4 (Be)2p6 3s2         12 (Mg) 3p6 4s2        203d10 4p6 5s2       38 4d10 5p6 6s2      564f14 5d10 6p6 7s2     88 5f14 6d10 7p6 8s2    1205g18 6f14 7d10 8p6 9s2   170 6g18 7f14 8d10 9p6 10s2 220             
    • A. 

      5g1

    • B. 

      8s1

    • C. 

      8s3

    • D. 

      7d1

  • 10. 
    Visible light has wavelengths from 400 to 700 nm. Which wavelength below is dangerous?The chart below may be helpful:
    • A. 

      300 nm

    • B. 

      500 nm

    • C. 

      800 nm

    • D. 

      1 meter

  • 11. 
    A hydrogen electron starts in the 9th shell and emits light with a wavelength of 11,306.4 nm. What inner shell did it end up in?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

    • E. 

      5

    • F. 

      6

    • G. 

      7

    • H. 

      8

    • I. 

      9

    • J. 

      10

  • 12. 
    Which has the lowest mass: an electron, a proton, or a neutron?
    • A. 

      Electron

    • B. 

      Proton

    • C. 

      Neutron

    • D. 

      They are all exactly the same

  • 13. 
    An electron exhibits the properties of both matter and energy
    • A. 

      True

    • B. 

      False

  • 14. 
    Based on the electron dot structure of fluorine and recognizing that unpaired electrons are bonding electrons, we would predict that a fluorine atom is likely to form ___ chemical bond(s).
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

    • E. 

      7

    • F. 

      6

  • 15. 
    The magnesium dication is isoelectronic with the _____ atom.(isoelectronic means "equal number of electrons") 
    • A. 

      Neon

    • B. 

      Argon

    • C. 

      Silicon

    • D. 

      Sodium

  • 16. 
    Which of the following would be the correct way to represent an iodine anion (I-) using the Aufbau order? 
    • A. 

      1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^6 4d^10 5s^2 5p^6

    • B. 

      1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^6 4d^10 5s^2 5p^5

    • C. 

      1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6

    • D. 

      1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^5

  • 17. 
    An electron is attracted to ____________
    • A. 

      Another electron

    • B. 

      A proton

    • C. 

      A neutron

    • D. 

      The negative pole of a magnet

  • 18. 
    Visible light has a wavelenth between 400 and 700 nanometers. Therefore, when an hydrogen electron travels from the second shell to the first shell, it releases energy in the form of visible light.
    • A. 

      True

    • B. 

      False

  • 19. 
    The exact position and velocity of an electron can never be precisely determined. This is the essence of the _______________
    • A. 

      Heisenberg Uncertainty Principle

    • B. 

      Aufbau Principle

    • C. 

      Pauli Principle

    • D. 

      Misenti Principal

  • 20. 
    When a hydrogen electron moves from the second shell to the fifth shell, it releases energy and forms a hydrogen cation.
    • A. 

      True

    • B. 

      False

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