Oxidation number of elements in atoms and ions Quiz

Determine the oxidation number of ‘N’ in NH₄⁺

+4

+1

-3

+3

The oxidation number of Cr in Cr₂O₇^2-

-3

+6

+12

-6

+3

What is the oxidation number of ‘O’ in H₂O₂

+1

+2

-1

-2

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

-5

+3

+1

+5

-3

The oxidation number of ‘O’ in OF₂ is

+2

+1

-2

-1

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

+7

-3

-1

-5

+5

-7