Oxidation number of elements in atoms and ions Quiz

What is the oxidation number of ‘O’ in H₂O₂

-2

-1

+2

+1

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

-7

+7

-1

-3

-5

+5

The oxidation number of Cr in Cr₂O₇^2-

-3

+3

-6

+6

+12

The oxidation number of ‘O’ in OF₂ is

+2

-1

+1

-2

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

+3

-3

+1

+5

-5

Determine the oxidation number of ‘N’ in NH₄⁺

+1

+3

-3

+4