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Solution: How many valence electrons are in an atom of phosphorus and ...

Question

How many valence electrons are in an atom of phosphorus and an atom of selenium?

(A) Phosphorus has 3; selenium has 4

(B) Phosphorus has 5; selenium has 1

(C) Phosphorus has 5; selenium has 6

(D) Phosphorus has 15; selenium has 34

(E) Phosphorus has 3; selenium has 6