What is the Oxidation State of K in KO2

What is the oxidation state of K in KO₂ A) -1 B) -2 C) +1 D) 0?

Answer:- Option C

Explanation

we must remember that K is an alkali metal. KO₂ is a neutral chemical in this case. We’ll give it a net charge of 0 to help us figure out what oxidation state it is. 

To begin, we must note that KO₂ contains K, which is a member of group 1. 

As a result, it easily reacts with oxygen. We know that the tendency to create peroxides and superoxides rises as we advance down the group. 

Assume that the oxidation number of oxygen is x in KO₂.

Oxidation state of oxygen is 1/2 because  it is superoxide.

x + 2(-1/2) = 0

x – 1 = 0

x = +1

We know that K = +1 and that KO₂ is a neutral chemical. It can only take the +1 oxidation state since it only has one electron in its valence shell. K has an oxidation state of K⁺, whereas the other half has an oxidation state of O₂. 

As a result, KO₂ is a paramagnetic substance. We may readily determine the oxidation state by applying the formula, which states that the sum of the oxidation states of all the elements present in the molecule equals the net charge on the complex. When it comes to

Therefore, option C is correct.