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Which of the listed electronic configurations corresponds to the atom of nitrogen in a nitric acid HNO3?

А.  [He] 2s1 2p2 

B.   [He] 2s2 2p

C.   [He] 2s0 2p0

D.  [He] 2s1 2p1

E.  [He] 2s2 2p 

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C.   [He] 2s0 2p0

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