oxidation number of fluorine is always -1. Why? Explain in detail.
Dear student
The most electronegative element, fluorine has oxidation number -1, always. For other halogens, the oxidation number is generally -1, but there are exceptions when these are bonded to a more electronegative halogen atom or oxygen.
For example, in HI, the oxidation number of I is -1 but in IF5, it is +5 and in IF7 it is +7 and the F remains in -1 oxidation state.
Now if the Fluorine is bonded to oxygen then fluorine will not have positive oxidation state.
For example, in OF2 oxidation state of fluorine is -1 and of oxygen is +2 (an exception as oxygen has -2 oxidation state in most of compounds except peroxides and OF2)
the reason for this is high electronegativity of fluorine
Regards
The most electronegative element, fluorine has oxidation number -1, always. For other halogens, the oxidation number is generally -1, but there are exceptions when these are bonded to a more electronegative halogen atom or oxygen.
For example, in HI, the oxidation number of I is -1 but in IF5, it is +5 and in IF7 it is +7 and the F remains in -1 oxidation state.
Now if the Fluorine is bonded to oxygen then fluorine will not have positive oxidation state.
For example, in OF2 oxidation state of fluorine is -1 and of oxygen is +2 (an exception as oxygen has -2 oxidation state in most of compounds except peroxides and OF2)
the reason for this is high electronegativity of fluorine
Regards