what is the oxidation number of
Mn in MnCl2 --> +2
Mn in MnO4^- ---->
S in K2S4O6 ----------> +10
Cl in HCl ------>+1
I couldn't do (Mn in MnO4^- ---->) this one and also i am not sure on third one either..
Please help me ohh.. do i have to multiply coefficant to each molecule before looking for oxidation number?