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They only need 1 electron to gain a full outer shell as the Halogens are Group VII. They are very similar to the Group I metals, which, in retrospect, need to lose/give away 1 electron to achieve the same goal. This is typically why they are so reactive.

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Related Questions

Are halogens reactive?

Yes, halogens are extremely reactive.


Which is the most reactive of the halogens and why is it the most reactive of the halogens?

fluorine is the most reactive


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because to be stable they need 8 atoms in outer energy level halogens need one so are highly reactive. alkali need 7 so are highly reactive( not as highly as halogens)


Why alkali metals and the halogens among the most reactive elements on the periodic table?

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No, halogens are reactive however and can be dangerous.


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The most reactive group of the nonmetals are the?

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Which family of elements is the most reactive nonmetal family?

The most reactive family of nonmetals is the halogen family.


F2 is most reactive of all the halogens?

Yes. fluorine is most reactive among all halogens as it has the highest electronegativity. Also, Fluorine has an incomplete outer shell that is closer to the nucleus so it is easier to attract an electron; this also makes fluorine the most reactive.


What term describes the most reactive nonmetals that have seven valence electron?

halogens


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halogens.


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