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27 December, 03:19

How many paired and unpaired electrons are in magnesium?

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  1. 27 December, 03:33
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    Paired = 12

    Unpaired = 0

    Explanation:

    Magnesium is alkaline earth metal.

    It is present in second group.

    Its atomic number is 12 and atomic mass 24 amu.

    Electronic configuration:

    Mg₁₂ = 1s² 2s² 2p⁶ 3s²

    It can seen from electronic configuration that all electrons are paired because s subshell have one orbital and it can accomodate two electrons. Each s subshells in magnesium have two electrons so these are filled and have paired electrons. While p subshell have three orbitals and can accomodate six electrons two by each orbital with opposite spin thus 2p is also filled and have paired electrons.
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