What are interhalogen compounds ? Give some examples to illustrate the definition. How are they classified ?

Explanation

The binary diamagnetic compounds of halogens which are formed by the reaction of halogens among themselves are called interhalogen compounds.
E.g. : `IF_(7),ClF_(3),BrF_(3),ClF,IF_(3)` etc.
The above examples are binary diamagnetic compounds and formed by combination of halogens only.
Inter halogen compounds are classified into four types.
1) AX - Type : Eg : ClF, BrF
2) `AX_(3)` - Type : Eg : `ClF_(3), IF_(3)`
3) `AX_(5)` - Type : Eg : `ClF_(5),BrF_(5)`
4) `AX_(7)` - Type : Eg : `IF_(7)`
`to` 'A' is less electronegative halogen.
`to` X is more electronegative halogens.