The electron configuration of an element is 1s22s22p63s1 Describe what most likely happens when an atom of this element comes near an atom having seven valence electrons.

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They will create an ionic bond.

Explanation:

The atom with the one valence electron will lose its one, because it's a metal and metals will lose electrons to become stable. The nonmetal (with 7 valence electrons) will gain that electron, therefore creating a stable octet for the nonmetal, making the compound stable.