Electrophile: Electron-loving species are generally called electrophiles. More precisely we can say that the species which are electron deficient are an electrophile.
Diazonium salt is an electrophile due to the presence of a positive charge on nitrogen.
The diazonium ion serves as an electrophile in the azo-dye response.
This is a weak electrophile due to the delocalization of the positive charge on the ring.
Because they are poor electrophiles, aryl diazonium ions only interact with highly activated aromatic molecules.
Hence, the general formula of diazonium salts is .