Question
Why does fluorine not form oxoacids?
Solution
flourine is very electronegative and it cannot exist in positive oxidation states in its compounds .in oxyacids of halogens ,oxygen carries a negative charge while the halogen carries a positive charge.the electronegativity of flourine is 4,while that of oxygen is 3.5. so due to high value of electronegativity ,flourine shows reluctance to form positive oxidation states and donot form oxyacids.
While other halogen form a number of oxoacid i which they have +1,+3,+4, and +6 oxidation state.
F forms only one oxoacid HOF which is unstable.
