Test 4 - Electrons In Atoms

40 Questions | Total Attempts: 190

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Test 4 - Electrons In Atoms

A quiz covering electron configurations, electronic orbitals, valence electrons, periodic trends, and ionization of atoms.


Questions and Answers
  • 1. 
    What is the general shape of an s orbital?
    • A. 

      Spherical

    • B. 

      Four-leaf clover

    • C. 

      Cylindrical

    • D. 

      Figure-eight

  • 2. 
    A cation
    • A. 

      Has a negative charge

    • B. 

      Has gained electrons

    • C. 

      Has a positive charge

    • D. 

      Has no charge

  • 3. 
    According to the Heisenberg Uncertainty Principle,
    • A. 

      Electrons are added to orbitals in order of increasing energy.

    • B. 

      The number of electrons in an atom is uncertain.

    • C. 

      It is impossible to know both the velocity and position of an electron.

    • D. 

      No orbital in a sublevel may be empty if two electrons are paired in that sublevel.

  • 4. 
    Which of the following atoms has the greatest ionization energy?
    • A. 

      Sulfur

    • B. 

      Silicon

    • C. 

      Chlorine

    • D. 

      Magnesium

  • 5. 
    Which of the following would be the LEAST stable?
    • A. 

      An atom of N in its excited state electron configuration

    • B. 

      An ion of Na+

    • C. 

      An atom of P in its ground state electron configuration

    • D. 

      An atom of Ar

  • 6. 
    What is the electron configuration for selenium?
    • A. 

      1s22s22p63s23p64s24d104p4

    • B. 

      1s22s22p63s23p64s23d104p4

    • C. 

      1s22s23s23p64s23d104p4

    • D. 

      1s22s22p63s23p64s23d104p2

  • 7. 
    The energy change associated with the gain of an electron is called
    • A. 

      Electronegativity

    • B. 

      Ionization energy

    • C. 

      Electron capture

    • D. 

      Electron affinity

  • 8. 
    What is the maximum number of sublevels in the third energy level?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 9. 
    Which of the following atoms would have a very high electronegativity?
    • A. 

      Oxygen

    • B. 

      Titanium

    • C. 

      Calcium

    • D. 

      Aluminum

  • 10. 
    How will an atom of magnesium obtain an octet?
    • A. 

      By losing two electrons

    • B. 

      By gaining two electrons

    • C. 

      By gaining six electrons

    • D. 

      By losing six electrons

  • 11. 
    How many d orbitals are found in a zinc atom?
    • A. 

      5

    • B. 

      10

    • C. 

      1

    • D. 

      30

  • 12. 
    Which of the following elements does NOT have two valence electrons?
    • A. 

      Lithium

    • B. 

      Helium

    • C. 

      Calcium

    • D. 

      Iron

  • 13. 
    Which of the following elements has the largest atomic radius?
    • A. 

      Magnesium

    • B. 

      Beryllium

    • C. 

      Strontium

    • D. 

      Calcium

  • 14. 
    According to Hund's Rule,
    • A. 

      Electrons are added to orbitals in order of increasing energy.

    • B. 

      The number of electrons in an atom is uncertain.

    • C. 

      It is impossible to know both the velocity and position of an electron.

    • D. 

      No orbital in a sublevel may be empty if two electrons are paired in that sublevel.

  • 15. 
    How many electrons in molybdenum are found in the fourth energy level?
    • A. 

      6

    • B. 

      12

    • C. 

      13

    • D. 

      2

  • 16. 
    Atoms or ions with an octet will be
    • A. 

      Anions.

    • B. 

      Noble gases.

    • C. 

      Highly electronegative.

    • D. 

      Stable.

  • 17. 
    An atom of silicon will have how many valence electrons?
    • A. 

      14

    • B. 

      2

    • C. 

      8

    • D. 

      4

  • 18. 
    Which of the following atoms has an octet?
    • A. 

      Chlorine

    • B. 

      Argon

    • C. 

      Sodium

    • D. 

      Nickel

  • 19. 
    Which of the following elements has six valence electrons?
    • A. 

      Ba

    • B. 

      Cr

    • C. 

      Te

    • D. 

      C

  • 20. 
    Which of the following atoms would have the LOWEST ionization energy?
    • A. 

      Lithium

    • B. 

      Carbon

    • C. 

      Neon

    • D. 

      Fluorine

  • 21. 
    How many electrons are found in the third energy level of calcium?
    • A. 

      2

    • B. 

      6

    • C. 

      8

    • D. 

      10

  • 22. 
    What is the electron configuration for scandium?
    • A. 

      1s22s22p63s23p64s24d1

    • B. 

      1s22s22p63s23p64s23d1

    • C. 

      1s22s22p63s23p63d3

    • D. 

      1s22p63s23p64s23d1

  • 23. 
    Elements that have seven valence electrons are
    • A. 

      Metals.

    • B. 

      Halogens.

    • C. 

      Noble gases.

    • D. 

      All found in Group 7 of the Periodic Table.

  • 24. 
    Fluorine has a very high
    • A. 

      Atomic radius.

    • B. 

      Octet.

    • C. 

      Electron configuration.

    • D. 

      Electronegativity.

  • 25. 
    What is the symbol for the gallium ion?
    • A. 

      Ga2+

    • B. 

      Ga5+

    • C. 

      Ga3+

    • D. 

      Ga4+

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