Question

oxidation number of Cl in ClF3​

Answer 1

+3

Oxidation no. of flourine is always -1 , therefore

X + 3(-1) =0

X - 3= 0

X = +3

Answer 2

THE OXIDATION NUMBER OF CHLORINE WILL BE +3 IN $ClF_{3}$.

Explanation:

• The oxidation state/number of an element is the number of electrons it can share with other elements.
• The halogens have an oxidation state of -1 as they have 1 electron less to complete their octet. They have 7 valence electrons.
• When we have to find the oxidation number of an element we take it as 'x'.
• The oxidation number of fluorine is -1 and let 'x' be the oxidation number of chlorine.
• The molecule is neutral, so the sum of their oxidation states will be equal to 0.
• Therefore,

        $x+(-1*3)=0\\x-3=0\\x=+3$

• The oxidation number of Cl is +3 in $ClF_{3}$.