Question

What is the oxidation number of Cl in KClO3

Answer 1

since the oxidation states have to equal 0 when you add them,chlorine must be+5.so,the answer to your question is that chlorine in the compound kclo3,has state of 5
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Answer 2

The oxidation number of chlorine in given chemical compound is +5

Explanation:

Oxidation number is the number that is given to an atom when it looses or gains electron. It is written as a superscript.

A positive oxidation number is obtained, when an element looses electrons and a negative oxidation number is obtained, when an element gains electrons.

We are given a chemical compound having formula of $KClO_3$

Let us take the oxidation number of chlorine be 'x'

We know that:

Oxidation number of potassium = +1

Oxidation number of oxygen = -2

Evaluating the oxidation number of chlorine, we get:

$\Rightarrow +1+x+(3\times (-2))=0\\\\\Rightarrow x=+6-1=+5$

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