Skip to main content
Chemistry LibreTexts

Solutions

  • Page ID
    11085


  • 1. complete electronic configuration abbreviated electronic config. valence electrons
    a) Fe 1s22s22p63s23p64s23d6 [Ar]4s23d6
    2
    b) Er(aufbau) 1s22s22p63s23p64s23d104p65s24d105p66s25d14f11 [Xe]6s25d14f11
    2
    (mnemonic) 1s22s22p63s23p64s23d104p65s24d105p66s24f12 [Xe]6s24f12
    2
    c) Se 1s22s22p63s23p64s23d104p4 [Ar]4s23d104p4
    6
    d) Cs 1s22s22p63s23p64s23d104p65s24d105p66s1 [Xe]6s1
    1
    e) Ag 1s22s22p63s23p64s23d104p65s14d10 [Kr]5s14d10
    1

    2. Draw the complete energy level diagram for Mo and describe its magnetic properties.

    3. Describe a possible set of quantum numbers for the 6th, 22nd, 44th and 80th electrons in mercury. Using the Aufbau Principle

    6th - 2,1,0,+1/2

    22nd - 3,2,1,+1/2

    44th - 4,2,2,-1/2

    80th - 5,2,-2,-1/2

    4. Classify each of the following elements (based on their electronic configuration).

    As - Representative Ru - Transition
    Cu - Transition Cm - Inner Transition

    5. Determine the electronic configuration and draw the expected orbital for each of the following sets of quantum numbers.

    3,1,-1,+½ - 3p3 5,0,0,-½ - 5s2
    2,1,0,+½ - 2p2 4,2,-2,-½ - 4d10