Question

The oxidation number of sulphur in S8, S2F2 and H2S respectively are :

• A. 0, + 1 and – 2
• B.
  • 2, + 1 and – 2
• C. 0, + 1 and + 2
• D. – 2, + 1 and – 2

Answer 1

Answer: (A)

0, + 1 and – 2

Answer 2

Oxidation state of molecular sulphur S8 is zero

Oxidation state of sulphur in S2F2 = 2x + 2(–1) = 0 ; 2x = +2

or x = 1

Oxidation state of sulphur in H2S = 2(+1) + x = 0 or x = – 2.