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18 June, 08:28

Write the full ground-state electron configuration for each:

(a) Br (b) Mg (c) Se

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  1. 18 June, 12:05
    0
    Bromine (35) 1s²2s²2p63s²3p⁶3d¹⁰ 4s² 4p⁵

    Magnesium (12) 1s2 2s2 2p6 3s²

    Selenium (34) 1s²2s²2p63s²3p⁶3d¹⁰ 4s² 4p4

    Explanation:

    In the SPDF electronic configuration, the S orbital can accommodate maximum of 2 electrons,

    The P orbital has maximum of 6 electrons

    The D orbital has maximum of 10 electrons

    The F orbital has maximum of 14 electrons

    Bromine with atomic number 35 belongs to group seven (7) period four (4) it ground state electron configuration is 1s²2s²2p63s²3p⁶3d¹⁰ 4s² 4p⁵

    Magnesium with atomic number 12 belongs to group one, period two (2), it ground state electron configuration is 1s2 2s2 2p6 3s²

    Selenium has atomic number of 34, it belongs to group six (6), period four (4) it electronic configuration is 1s²2s²2p63s²3p⁶3d¹⁰ 4s² 4p4
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