Electron Configuration -5Q - (II)



A red asterisk (*) indicates required questions.


  1. What is the electron configuration of the element - Magnesium?*
    1s2 2s2 3s2 3p6
    1s2 2s2 3p6 4s2
    1s2 2s2 2p6 3p2
    1s2 2s2 2p6 3s2


  1. What element has the electron configuration of:
    1s2 2s2 2p6 3s2 3p6 4s2 3d7*
    Iron
    Cobalt
    Nickel


  1. What is the electron configuration of the element - Sulfur?*
    1s2 2s2 2p6 3s2 3p6 4s2
    1s2 2s2 2p6 3s2 3p6
    1s2 2s2 2p6 3s2 3p4
    1s2 2s2 2p6 3s2 3p6 4s2 4p4


  1. How many unpaired electrons does the element aluminum have?*
    1
    2
    3
    4


  1. The Lewis Dot Structure X: is for the element:*
    Ar
    V
    Li
    S