In bleaching powder individual oxidation numbers of chlorine atoms are x, y .

The value of x+y is ___

Structure of CaOCl₂ is:

$\stackrel{-1}{\mathrm{Cl}}-\mathrm{Ca}-\mathrm{O}\stackrel{+1}{\mathrm{Cl}}$

Oxidation of Cl (attached to O) has +1 and the other terminal Cl has -1 oxidation state. The sum of oxidation state of Cl atoms in CaOCl₂ is 0.