Q.

The oxidation number and covalency of sulphur in S8 molecule are

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a

+6 and 2

b

0 and 8

c

0 and 2

d

+6 and 8

answer is A.

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Detailed Solution

The oxidation state of an atom in its elemental state is ZERO. 

The structure of S8 has crown structure in which each sulphur has 2 covalent bonds .Hence its covalency is 2 . 

File:Molecular Sulfur (S8) V.1.svg - Wikimedia Commons

 

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The oxidation number and covalency of sulphur in S8 molecule are