Question

Oxygen has an oxidation state in-a)H²o² b) H2O c)OF2 d) SO2

Answer 1

The oxidation number of
H
is +1. The oxidation number of
O
is -1.

Explanation:
You assign oxidation numbers to the elements in a compound by using the Rules for Oxidation Numbers.

The important rules for this problem are:

The oxidation number of
H
is +1, but it is -1 in when combined with less electronegative elements.

The oxidation number of
O
in compounds is usually -2, but it is -1 in peroxides.

The sum of the oxidation numbers of all the atoms in a neutral compound is 0.

The oxidation number of
H
is +1 (Rule 1).

If you know that
H2O2
is hydrogen peroxide, you can immediately assign oxygen the ON = -1.

If you don't know that
H2O2
is hydrogen peroxide, you can use Rule 3.

The oxidation number of
H
is +1. For two
H
atoms, the sum is +2.

Since
H2O2
has no charge, the total oxidation number of the two
O
atoms must be -2.

The oxidation number of one oxygen atom must be -1.

Answer 2

Answer:

-1

Is the oxidation no. Of oxygen in this