Q. What is the oxidation number of chlorine in $C I O_{3}^{-}$ ?

1647 270 MGIMS WardhaMGIMS Wardha 2004 Report Error

A

5

B

3

C

4

D

2

Solution:

Oxidation number of $Cl$ in $Cl O_{3}$ . $Cl O_{3}^{-} = - 1$ $x + 3 (- 2) = - 1$ $x = + 6 - 1$ $x = + 5$