Chem Electron Config

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S2-
Cu+
Sn2+
O2-
A 1s22s22p63s23p63d10
B. 2s2
C. 1s22s22p63s23p4
D. 1s22s22p63s23p63d104s1
E. 1s2
F. 1s22s22p63s23p64s23d104p65s24d10
G. 1s22s22p63s23p64s23d104p64d105s25p2
H. 1s22s22p4
I. 1s22s22p6
J. none of the above

Choose from the list the correct electron configurations for the following ions.
I thought the answers were J D F I but its showing online as incorrect

  • Chem Electron Config -

    A. 1s2 2s2 2p6 3s2 3p6 3d10 28e
    B. 2s2 ?e
    C. 1s2 2s2 2p6 3s2 3p4 16e

    D. 1s2 2s2 2p6 3s2 3p6 3d10 4s1 29e

    E. 1s2 2e

    F. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 48e

    G. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10 5s2 5p2 50e

    H. 1s2 2s2 2p4 8e

    I. 1s2 2s2 2p6 10

    S^2- must have 16+2=18e. None listed so J.
    Cu^+ must have 29-1 = 28e. So A.
    Sn^2+ must have 50-2 = 48. So ?
    O^2- must have 8+2 = 10. So ?

  • Chem Electron Config -

    1s22s22p63s23p4

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