The number of oxygen atoms present in chemical formula of fuming sulphuric acid is _______.
List-I (Oxoacids of Sulphur) | List-II (Bonds) | ||
A | Peroxodisulphuric acid | I | Two S–OH, Four S=O, One S–O–S |
B | Sulphuric acid | II | Two S–OH, One S=O |
C | Pyrosulphuric acid | III | Two S–OH, Four S=O, One S–O–O–S |
D | Sulphurous acid | IV | Two S–OH, Two S=O |