[oxfordstudent]

Why is the chemistry of fluorine so different to that of the remaining halogens?

[P]

I wouldn't have said it was allot different personally - apart from being WAY MORE reactive that the others due to its very high electronegativity, it pretty much forms similar compounds to chlorine with group one and two metals.   It WILL form compounds with group 8 elements though, again because of its electronegativity, where others tend not too. Its ridiculously high electronegativity is due to the lack of electronic shielding that the other, larger atoms have.

So - I wouldn't have said it was SO different, except for the increased reactivity and violence of reaction and the reaction with Noble gasses to make compounds such as Xenon Fluoride for example.

[n4k]

fluorine have one unpair electron and not capable transition in the exited condition.Hence, fluorine can have only one valency
fluorine very electronegatitivity.
therefore fluorine so diffirent to that of the remaining Hal