S2 molecule is paramagnetic like O2 and both have two unpaired electrons. At elevated temperature (∼1000K) S2 is the dominant species.
The vapour at 200oC consists mostly of S8 rings.
at 600∘C,
S8 (g) → 3S2 (g)
S can exhibit a minimum oxidation state of −2
(Ex. H2S)
Here the oxidation state of sulphur is -2
Option (c) is the right answer