Question

How many of the following species have sulphur atom in its +4 oxidation state? 

SO₃, SF₄, H₂SO₄, BaSO₄, H₂S₂O₇, SO₂, SOCI₂

Answer 1

Species	SO3	SF4	H2SO4	BaSO4	H2S2O7	SO2	SOCl2
Oxidation state of sulphur	+6	+4	+6	+6	+6	+4	+4