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JAMB - Chemistry (2012 - No. 9)
The electronic configuration of Mg
2+
is
ls
2
2s
2
2P
6
3s
2
3P
2
Is
2
2s
2
2P
6
ls
2
2s
2
2p
6
3s
2
ls
2
2s
2
2P
4
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