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Which of the following elements has the lowest ionization energy?

S because it is a nonmetal that will gain two electrons to obtain an octet.
Ba because it is a large metal atom that will easily lose two valence electrons.
Na because it is a small metal atom and can hold onto its electrons tightly.

User Deshanna
by
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1 Answer

5 votes
Na has the lowest ionization energy than Ba and S.
User Robert Speicher
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