Fluorine is more likely to form an ionic bond and take on electrons.
Electronegativity has to do with the ability of an atom to attract electrons. It is a periodic trend that decreases down the group but increases across the period.
Among all the elements listed, we can see that fluorine, having an electronegativity of 4.0 is the most electronegative element and is more likely to form an ionic bond in which it takes on electrons.
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