When an atom of sodium and an atom of fluorine combine to form a compound, sodium fluoride, an ionic bond is formed. Which statement CORRECTLY describes the behavior of the valence electron in the ionic bond? Group of answer choices

An electron from the sodium transfers to the fluorine atom, forming two ions.

An electron from the fluorine atom transfers to the sodium atom forming to ions.

An electron from the sodium is shared with the fluorine atom forming a fluoride ion.

An electron from the fluorine atom is shared with the sodium atom forming a sodium ion.