Fluorine is not an inert element. As a matter of fact, fluorine is a highly reactive element due to its small size. It is one of the strongest oxidants known and it is capable of reacting with even some noble gases to form stable chemical compounds.
It has 9 electrons in its electron shell and to achieve the electron configuration of the nearest noble gas Neon it requires one more electron. With 10 electrons the the stable electron configuration of 2, 8 is achieved. Once the extra electron has been acquired the resulting ion has has a negative charge of -1 and has a very high degree of stability and is non-reactive in nature; it only seeks an positive ion to partner with in the formation of chemical compounds to neutralize the negative charge that the fluoride ion has.
Fluorine is not an inert
Fluorine is not an inert element, it does not have noble gas configuration (8 valence electrons).
Fluorine is not an inert element. As a matter of fact, fluorine is a highly reactive element due to its small size