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Chemistry LibreTexts

General I001: Electron configuration

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  • The following questions are on electrons and electron configuration, it may be useful to review the associated material. These questions are for self-testing only, and are not suitable for assignments or exams.

    1.The number of bonds an atom can form depends on:

    A The number of electrons avaiable to be shared.
    B The overall size (radius) of the atom.
    C Is determined by which row the atom appears on the periodic table.
    D Can be calculated.
    E Is determined experimentally.

    2.The atomic number (Z) for carbon =

    A 4
    B 5
    C 6
    D 7
    E 12

    3.Hund's rule of maximum multiplicity states:

    A all orbitals of a given sublevel must be occupied by a single electron before pairing begins.
    B no two electrons can share the same set of quantum numbers.
    C it is impossible to accurately determine both the position and momentum of an electron.
    D S orbitals can hold up to 2 electrons.

    4.The correct orbital configuration of carbon is:

    A 1s2 2s1 2p3
    B 1s1 2s2 2p3
    C 1s2 2s2 2p4
    D 1s2 2s2 2p2
    E 1s2 2s2 2p6

    5.Which one of the following is a proper orbital configuration?

    GeneralI0001 005.png

    A a
    B b
    C c
    D d

    6.Which one of the following is a proper orbital configuration?

    GeneralI0001 006.png

    A a
    B b
    C c
    D d

    7.1s2 2s2 2p4 is the orbital configuration for:

    A Boron
    B Carbon
    C Nitrogen
    D Oxygen
    E Fluorine

    8.1s2 2s2 2p6 is the orbital configuration for:

    A Fluorine
    B Neon
    C Chlorine
    D Argon
    E Sodium

    9.Which of the following is an appropriate electron configuration for a neutral sodium atom (Z = 11)?

    A 1s22s22p6
    B 1s22s32p6
    C 1s22s22p7
    D 1s22s22p63s1
    E 1s22s22p63s2

    10.Which one of the following is the proper orbital configuration for a neutral lithium atom?

    GeneralI0001 010.png

    A a
    B b
    C c
    D d



    1. A

    2. C

    3. A

    4. D

    5. A

    6. D

    7. D

    8. B

    9. D

    10. B