Since, fluorine is an electronegative element ,therefore it is most likely to gain an electron ,so option (b) is correct.
What do mean the electronegativity of an element ?
Electronegativity is referred to as a chemical property that describes the tendency of an atom of an element to attract shared electrons while forming a chemical bond.
Electronegativity of elements across a period-
As we move from left to right through a period in the modern periodic table, the nuclear charge increases and the atomic size decreases, as a result it increases the value of electronegative elements.
Fluorine has the highest electronegativity element on periodic table.
Hence it concludes that fluorine is an electronegative element ,and it is most likely to gain an electron ,so option (b) is correct.
Learn more about electronegativity ,here:
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