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Transcript of Chemistry 143 Electron Configurations Dr. Electron Configurations Key.pdf Chemistry 143 Electron...

  • Chemistry 143 Electron Configurations Dr. Caddell

    Electron Configurations Write the complete (expanded) electron configurations and core (noble gas) electron configurations for the following elements.  Use only  the periodic table supplied for reference. 

    Group 1(1A) – Alkali Metals

    Element Expanded Electron Configuration Core Notation

    H 1s1 Not for this one

    Li 1s22s1 [He]2s1

    Na 1s22s22p63s1 [Ne]3s1

    K 1s22s22p63s23p64s1 [Ar]4s1

    Rb 1s22s22p63s23p64s23d104p65s1 [Kr]5s1

    Cs 1s22s22p63s23p64s23d104p65s24d105p66s1 [Xe]6s1

    Fr 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p67s1 [Rn]7s1

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  • Chemistry 143 Electron Configurations Dr. Caddell

    Group 2(2A) – Alkaline Earth Metals

    Element Expanded Electron Configuration Core Notation

    Be 1s22s2 [He]2s2

    Mg 1s22s22p63s2 [Ne]3s2

    Ca 1s22s22p63s23p64s2 [Ar]4s2

    Sr 1s22s22p63s23p64s23d104p65s2 [Kr]5s2

    Ba 1s22s22p63s23p64s23d104p65s24d105p66s2 [Xe]6s2

    Ra 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p67s2 [Rn]7s2

    Group 13(3A)

    Element Expanded Electron Configuration Core Notation

    B 1s22s22p1 [He]2s22p1

    Al 1s22s22p63s23p1 [Ne]3s23p1

    Ga 1s22s22p63s23p64s23d104p1 [Ar]4s23d104p1

    In 1s22s22p63s23p64s23d104p65s24d105p1 [Kr]5s24d105p1

    Tl 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p1 [Xe]6s24f145d106p1

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  • Chemistry 143 Electron Configurations Dr. Caddell

    Group 14(4A)

    Element Expanded Electron Configuration Core Notation

    C 1s22s22p2 [He]2s22p2

    Si 1s22s22p63s23p2 [Ne]3s23p2

    Ge 1s22s22p63s23p64s23d104p2 [Ar]4s23d104p2

    Sn 1s22s22p63s23p64s23d104p65s24d105p2 [Kr]5s24d105p2

    Pb 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p2 [Xe]6s24f145d106p2

    Group 15 (5A)

    Element Expanded Electron Configuration Core Notation

    N 1s22s22p3 [He]2s22p3

    P 1s22s22p63s23p3 [Ne]3s23p3

    As 1s22s22p63s23p64s23d104p3 [Ar]4s23d104p3

    Sb 1s22s22p63s23p64s23d104p65s24d105p3 [Kr]5s24d105p3

    Bi 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p3 [Xe]6s24f145d106p3

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  • Chemistry 143 Electron Configurations Dr. Caddell

    Group 16 (6A)

    Element Expanded Electron Configuration Core Notation

    O 1s22s22p4 [He]2s22p4

    S 1s22s22p63s23p4 [Ne]3s23p4

    Se 1s22s22p63s23p64s23d104p4 [Ar]4s23d104p4

    Te 1s22s22p63s23p64s23d104p65s24d105p4 [Kr]5s24d105p4

    Po 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p4 [Xe]6s24f145d106p4

    Group 17(7A) ­ Halogens

    Element Expanded Electron Configuration Core Notation

    F 1s22s22p5 [He]2s22p5

    Cl 1s22s22p63s23p5 [Ne]3s23p5

    Br 1s22s22p63s23p64s23d104p5 [Ar]4s23d104p5

    I 1s22s22p63s23p64s23d104p65s24d105p5 [Kr]5s24d105p5

    At 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p5 [Xe]6s24f145d106p5

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  • Chemistry 143 Electron Configurations Dr. Caddell

    Group 18(8A) – Noble Gases

    Element Expanded Electron Configuration Core Notation

    He 1s2 Not for this one

    Ne 1s22s22p6 [He]2s22p6

    Ar 1s22s22p63s23p6 [Ne]3s23p6

    Kr 1s22s22p63s23p64s23d104p6 [Ar]4s23d104p6

    Xe 1s22s22p63s23p64s23d104p65s24d105p6 [Kr]5s24d105p6

    Rn 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p6 [Xe]6s24f145d106p6

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  • Chemistry 143 Electron Configurations Dr. Caddell

    Period 4 Transition Elements

    Element Expanded Electron Configuration Core Notation

    Sc 1s22s22p63s23p64s23d1 [Ar]4s23d1

    Ti 1s22s22p63s23p64s23d2 [Ar]4s23d2

    V 1s22s22p63s23p64s23d3 [Ar]4s23d3

    Cr 1s22s22p63s23p64s13d5 [Ar]4s13d5

    Mn 1s22s22p63s23p64s23d5 [Ar]4s23d5

    Fe 1s22s22p63s23p64s23d6 [Ar]4s23d6

    Co 1s22s22p63s23p64s23d7 [Ar]4s23d7

    Ni 1s22s22p63s23p64s23d8 [Ar]4s23d8

    Cu 1s22s22p63s23p64s13d10 [Ar]4s13d10

    Zn 1s22s22p63s23p64s23d10 [Ar]4s23d10

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  • Chemistry 143 Electron Configurations Dr. Caddell

    Period 5 Transition Elements

    Element Expanded Electron Configuration Core Notation

    Y 1s22s22p63s23p64s23d104p65s24d1 [Kr]5s24d1

    Zr 1s22s22p63s23p64s23d104p65s24d2 [Kr]5s24d2

    Nb* 1s22s22p63s23p64s23d104p65s14d4 [Kr]5s14d4

    Nb# 1s22s22p63s23p64s23d104p65s24d3 [Kr]5s24d3

    Mo* 1s22s22p63s23p64s23d104p65s14d5 [Kr]5s14d5

    Mo# 1s22s22p63s23p64s23d104p65s24d4 [Kr]5s24d4

    Tc* 1s22s22p63s23p64s23d104p65s14d6 [Kr]5s14d6

    Tc# 1s22s22p63s23p64s23d104p65s24d5 [Kr]5s24d5

    Ru* 1s22s22p63s23p64s23d104p65s14d7 [Kr]5s14d7

    Ru# 1s22s22p63s23p64s23d104p65s24d6 [Kr]5s24d6

    Rh* 1s22s22p63s23p64s23d104p65s14d8 [Kr]5s14d8

    Rh# 1s22s22p63s23p64s23d104p65s24d7 [Kr]5s24d7

    Pd* 1s22s22p63s23p64s23d104p64d10 [Kr]4d10

    Pd# 1s22s22p63s23p64s23d104p65s24d8 [Kr]5s24d8

    Ag* 1s22s22p63s23p64s23d104p65s14d10 [Kr]5s14d10

    Ag# 1s22s22p63s23p64s23d104p65s24d9 [Kr]5s24d9

    Cd 1s22s22p63s23p64s23d104p65s24d10 [Kr]5s24d10

    * These are exceptions which you do not need to memorize. # Use these instead

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  • Chemistry 143 Electron Configurations Dr. Caddell

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