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Question

Which of the following statements regarding sulphur is incorrect?


A

Sulphur is paramagnetic

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B

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

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C

The vapour at 200°C consists of S8 rings.

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D

At 600°C, the gas consists of S2 molecule

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Solution

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°C consists of S8 rings-

  • The vapour at 200°C consists mostly of S8 rings.

(D)At 600°C, the gas consists of S2 molecule -

  • At high temperature 600°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.


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