Question

Calculate the oxidation number of sulphur, chromium and nitrogen in H₂SO₅,–. Suggest structure of these compounds. Count for the fallacy.

Answer 1

(i)

However, the O.N. of S cannot be +8. S has six valence electrons. Therefore, the O.N. of S cannot be more than +6.

The structure of H₂SO₅ is shown as follows:

Therefore, the O.N. of S is +6.

(ii)

Here, there is no fallacy about the O.N. of Cr in.

The structure of is shown as follows:

Here, each of the two Cr atoms exhibits the O.N. of +6.

(iii)

Here, there is no fallacy about the O.N. of N in.

The structure of is shown as follows:

The N atom exhibits the O.N. of +5.