The correct electronic configuration of <sup>24</sup>Mg<br><sub>12</sub> is:

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The correct electronic configuration of 24Mg
12 is:

1s2,22,2p6,3s2

1s2,2s2,2p6,3s2,3p6,4s2,3d4

1s2,2s2,2p6,3s2,3p6,4s1,3d5

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