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28-01-2022
Chemistry

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How many unpaired electrons are present in a lithium atom?.

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Аноним Аноним

29-01-2022

Lithium has Z =3

Electronic configuration is given by

[tex]\\ \tt\bull\rightarrowtail 1s^22s^1[/tex]

1s orbital is filled
2s orbital is unfilled

So

unpaired electrons=1

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