Oxidation number of elements in atoms and ions Quiz

The oxidation number of Cr in Cr₂O₇^2-

+3

-3

+6

-6

+12

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

+3

-3

+1

-5

+5

Determine the oxidation number of ‘N’ in NH₄⁺

+3

-3

+4

+1

The oxidation number of ‘O’ in OF₂ is

+1

+2

-1

-2

What is the oxidation number of ‘O’ in H₂O₂

+1

-1

-2

+2

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

-3

-7

-1

+7

-5

+5