Question

In which of the following pairs, there is greatest difference in the oxidation number of the underlined elements ?

(a) NO2 and N2O4

(b) P2O5 and P4O10

(c) N 2O and NO

(d) SO2 and SO3

Answer 1

Correct option: (d) SO2 and SO3

Explanation:

O.N. of N in NO2 and N2O4 is +4 ∴ difference is zero.

O.N. of P in P2O5 and P4O10 is +5 ∴ difference is zero.

O.N. of N in N2O is +1 and in NO is +2. The difference is 1

O.N. of * in SO2 is +4 and in SO3 is +6. The difference is +2.