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  • The average oxidation states of sulphur in and <img alt="Na_{2}S_{4}O_{6}" src

The average oxidation states of sulphur in Na_{2}S_{2}O_{3} and Na_{2}S_{4}O_{6} are:

Option: 1

+1 and +3

 


Option: 2

+2 and + 1.5

 


Option: 3

+2 and +2.5

 


Option: 4

+2.5 and +3


Answers (1)

best_answer

Let x be the oxidation number of sulphur inNa_{2}S_{2}O_{3}?.
For a neutral compound, sum of oxidation states of all elements must be zero.
2+2x+3(−2)=0
2x=6−2
2x=4
x=+2
Suppose y be the oxidation number of sulphur in Na_{2}S_{4}O_{6}?.
2+4y+3(−2)=0
4y=12−2
4y=10
y=+2.5

 

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