Chemistry Electron Configuration Solution: An atom has 7 valence electrons – 2 are in an s-su...

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Solution: An atom has 7 valence electrons – 2 are in an s-subshell and 5 in a p-subshell. Which group is the atom in?(A) alkali metals(B) alkaline earth metals(C) pnictogens(D) chalcogens(E) halogens