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*Please answer all 3 for thumbs up!* 1- Calculate the energy of an electron in the  level...

*Please answer all 3 for thumbs up!*

1- Calculate the energy of an electron in the  level of a hydrogen atom.

Energy = ___ J

(2) The element with a valence electron configuration of 4s24p3 is in group __ and period ____ .

(3) The element with a valence electron configuration of 2s22p6 is in group ____ and period ____ .

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