Atoms with seven valence electrons are most probably classified as which?

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Multiple Choice

Atoms with seven valence electrons are most probably classified as which?

Explanation:
Having seven valence electrons means the outermost shell is almost full; the atom will typically gain one electron to reach a stable octet. This tendency to gain electrons and form negative ions is a hallmark of nonmetals, especially the halogens. Metals usually have 1–3 valence electrons and form positive ions, noble gases already have a full octet, and metalloids show mixed properties. So the best classification is nonmetals.

Having seven valence electrons means the outermost shell is almost full; the atom will typically gain one electron to reach a stable octet. This tendency to gain electrons and form negative ions is a hallmark of nonmetals, especially the halogens. Metals usually have 1–3 valence electrons and form positive ions, noble gases already have a full octet, and metalloids show mixed properties. So the best classification is nonmetals.

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