Oxidation number of elements in atoms and ions Quiz

What is the oxidation number of ‘O’ in H₂O₂

+1

-2

+2

-1

The oxidation number of Cr in Cr₂O₇^2-

+12

+3

+6

-3

-6

The oxidation number of ‘O’ in OF₂ is

-2

+1

-1

+2

Determine the oxidation number of ‘N’ in NH₄⁺

+1

+4

+3

-3

Determine the oxidation number of ‘Cl’ in ClO₄^–

-7

+7

-3

-5

-1

+5

Determine the oxidation number of Nitrogen ‘N’
in the compound HNO₃

-3

-5

+1

+5

+3