If chlorine gas is passed through a hot solution, two changes are observed in the oxidation number of chlorine during the reaction. These are ________ and _________.
(i) 0 to +5
(ii) 0 to +3
(iii) 0 to –1
(iv) 0 to +1
The answer is the option (i) and (iii). The oxidation state changes from 0 to +5 and 0 to -1 respectively.