bluepuppz bluepuppz

19-10-2020
Chemistry

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Which element contains one set of paired and three unpaired electrons in its fourth and outer main energy level?

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madelynbolca madelynbolca

19-10-2020

Explanation:

Phosphorus (P) because of the 5 valence electrons total, 3 of them are in the 3p sublevel, and according to Hund's rule, they "single-fill" each orbital first.

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