How should you change this image to represent an ionic bond between sodium and fluorine?

 Move one electron from sodium to fluorine, because the element with the smallest amount of valence electrons is the one that give away the electrons, it is easier to add one to seven than it is to add 7 to one. I just learned this in physics, hope it helps! If you need more explaining I can do that.

move 7 electrons from fluorine to sodium

Explanation:

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