First slide
Chemical reactions and calculations
Question

Oxidation number of S in SO42 is :

Moderate
Solution

Oxidation number  (O.N.) of S in SO42

found as :

O.N. of S+4 (O.N. of O ) =2

O.N. of S+4(2)=2

O.N. of S8=2

O.N. of  S=2+8=+6.

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