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8 July, 12:08

What are the symbols for the elements with the following valence electron configurations? List all. a. s2d1b. s2p3c. s2p

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  1. 8 July, 13:46
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    Sc : 4s 2 3d 1

    Y : l 5s 2 4d 1

    La : 6s 2 5d 1

    Ce : 6s 2 4f 1 5d 1

    Gd : 6s 2 4f 7 5d 1

    Lu : 6s 2 4f 14 5d 1

    Ac : 7s 2 6d 1

    Pa : 7s 2 5f 2 6d 1

    U : l 7s 2 5f 3 6d 1

    Np : 7s 2 5f 4 6d 1

    Cm : 7s 2 5f 7 6d 1

    b. s2p3

    he pnictogens:

    N l : 2s 2 2p 3

    P l : 3s 2 3p 3

    As : 4s 2 3d 10 4p 3

    Sb : 5s 2 4d 10 5p 3

    Bi : 6s 2 4f 14 5d 10 6p 3

    Mc : 7s 2 5f 14 6d 10 7p 3

    c. The noble gases:

    Ne : 2s 2 2p 6

    Ar : 3s 2 3p 6

    Kr : 4s 2 3d 10 4p 6

    Xe : 5s 2 4d 10 5p 6

    Rn : 6s 2 4f 14 5d 10 6p 6

    Og : 7s 2 5f 14 6d 10 7p 6

    Explanation: From the periodic tables we can drive elements with the electronic configuration

    Sc : 4s 2 3d 1

    Y : l 5s 2 4d 1

    La : 6s 2 5d 1

    Ce : 6s 2 4f 1 5d 1

    Gd : 6s 2 4f 7 5d 1

    Lu : 6s 2 4f 14 5d 1

    Ac : 7s 2 6d 1

    Pa : 7s 2 5f 2 6d 1

    U : l 7s 2 5f 3 6d 1

    Np : 7s 2 5f 4 6d 1

    Cm : 7s 2 5f 7 6d 1

    b. s2p3

    he pnictogens:

    N l : 2s 2 2p 3

    P l : 3s 2 3p 3

    As : 4s 2 3d 10 4p 3

    Sb : 5s 2 4d 10 5p 3

    Bi : 6s 2 4f 14 5d 10 6p 3

    Mc : 7s 2 5f 14 6d 10 7p 3

    c. The noble gases:

    Ne : 2s 2 2p 6

    Ar : 3s 2 3p 6

    Kr : 4s 2 3d 10 4p 6

    Xe : 5s 2 4d 10 5p 6

    Rn : 6s 2 4f 14 5d 10 6p 6

    Og : 7s 2 5f 14 6d 10 7p 6
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