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The oxidation number of sulphur is -1 in...

The oxidation number of sulphur is -1 in

A

FeS

B

`FeS_2`

C

`NaO-undersetunderset(ONa)(||)oversetoverset(O)(||)S=O`

D

`undersetunderset(ONa)(|)oversetoverset(O)(||)S-oversetoverset(O)(||)S-ONa`

Text Solution

Verified by Experts

The correct Answer is:
B
In `FeS_2` oxidation state of S= -1
O.S. of Fe = +2 (it is either +3)
Let O.S. of S=x
`therefore` 2 + 2x=0
x= -1
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