lexhernandez1121 lexhernandez1121

23-12-2022
Chemistry

contestada

The element in the seventh group and the third period will have
Select one:

a.7 energy Levels and a valence of 3

b.3 energy levels and a valence of 7

c.7 energy levels and a valence of 5

d. 3 energy levels and a valence of 1

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