The atom of sodium has one valence electron. To form a bond, the sodium atom should

Loose that one electron

Explanation:

Sodium is a member of group 1 in the periodic table. The members of this group are known to form a univalent positive ion and are highly electropositive.

They give out one electron and go into electrovalent of ionic combination.

Hence, for sodium to form a bond, it looses the only electron in its outermost shell.

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