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Which of the following statement regarding sulphur is incorrect?

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At 600°C, the gas mainly consists of S₂ molceules.

The oxidation state of sulphur is never less than+4 in its compounds.

S₂ molecule is paramagnetic.

The vapor at 200°C consists mostly of S₈ rings

answer is B.

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Detailed Solution

When S₈ gets heated, then depolymerization occurs. At $600 ° C,$ S₈ changes in S₂.

$S_{8} \overset{600 ° C}{\to} S_{2}$

Sulphur exists as S²⁺, S⁴⁺, S⁶⁺, and S⁸⁺.

S₂ has unpaired electrons in its anti-bonding orbitals, so it is paramagnetic.

S-form polyatomic molecules and one of the best allotropes of sulphur is octasulphur whose formula is S₈. At $200 ° C,$ S exists as S₈ form.

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