Question

Which of the following statements regarding sulphur is incorrect?

• A. Sulphur is paramagnetic
• B. The oxidation state of Sulphur is never less than +4 in its compound.
• C. The vapour at 200^°C consists of S8 rings.
• D. At 600^°C, the gas consists of S2 molecule

Answer 1

The correct option is B

The oxidation state of Sulphur is never less than +4 in its compound.

Explanation of correct option:

(B)The oxidation state of Sulphur is never less than +4 in its compound-

• Sulphur belongs to the group $16$.
• Its oxidation state varies from $-2$ to $+6$.
• In sulphuric acid it is $+6$ and in hydrogen sulphide it is $-2$.

Explanation of incorrect options:

(A)Sulphur is paramagnetic-

• Elements which have unpaired electrons show the paramagnetic property.
• Sulphur contains two unpaired electrons in an antibonding orbital.
• So Sulphur is paramagnetic.

(C)The vapour at ${200}^{°}\mathrm{C}$ consists of S₈ rings-

• The vapour at ${200}^{°}\mathrm{C}$ consists mostly of S₈ rings.

(D)At ${600}^{°}\mathrm{C}$, the gas consists of S₂ molecule -

• At high temperature ${600}^{°}\mathrm{C}$, the S₈ breaks into S₂ molecules.

Hence, option (B) is correct, the oxidation state of Sulphur is never less than +4 in its compound is incorrect regarding sulfur.