ΓΌ  Oxoacids of Sulphur: Sulphur forms a large no. of oxoacids. Sulphurous acid (H2SO3), Sulphuric acid (H2SO4), Dithionic acid (H2S2O6), Peroxomonosulphuric acid (Caro’s acid, H2SO5), Peroxodisulphuric acid (Marshell’s acid, H2S2O8) etc. Structure of some oxoacids are