What is the oxidation number for oxygen in H2O2; for OF2 Explain..pdf

What is the oxidation number for oxygen in H2O2; for OF2 ? Explain.
Solution
In H2O2
The oxidation number of Oxygen is -1. The oxidation number of Oxygen in compounds is
usually -2, but it is -1 in peroxides.
Another Way
The oxidation number of H is +1. For two H atoms, the sum is +2.
Since H2O2 is a neutral compound (no charge), (The sum of the oxidation numbers of all the
atoms in a neutral compound is 0.)
The total oxidation number of the two O atoms must be -2.
Hence the oxidation number of one oxygen atom must be -1.
For OF2
The electronegativity of F is 4.0 and of O 3.5, so Oxygen is surely (+) in this compound.
Oxidation number of F2 is -1
Let oxidation number of O be n
n+ 2*(-1) = 0
n= 2
oxidation number of Oxyfen is 2..

1. What is the oxidation number for oxygen in H2O2; for OF2 ? Explain.

Solution

In H2O2
The oxidation number of Oxygen is -1. The oxidation number of Oxygen in compounds is
usually -2, but it is -1 in peroxides.
Another Way
The oxidation number of H is +1. For two H atoms, the sum is +2.
Since H2O2 is a neutral compound (no charge), (The sum of the oxidation numbers of all the
atoms in a neutral compound is 0.)
The total oxidation number of the two O atoms must be -2.
Hence the oxidation number of one oxygen atom must be -1.
For OF2
The electronegativity of F is 4.0 and of O 3.5, so Oxygen is surely (+) in this compound.
Oxidation number of F2 is -1
Let oxidation number of O be n
n+ 2*(-1) = 0
n= 2
oxidation number of Oxyfen is 2.