Answer :
The oxidation number is= +1. We can show it like this
The oxidation number of H =+1
Lets say that=
O=-2
Cl=X
and now let's say that the total oxidation number =0
+1+X+-2=0
X=2-1
Oxidation number=+1
The oxidation number of H =+1
Lets say that=
O=-2
Cl=X
and now let's say that the total oxidation number =0
+1+X+-2=0
X=2-1
Oxidation number=+1