Calculate the oxidation number of all the atoms in the following well known oxidants. KMnO_4,K_2Cr_2O_7, KClO_4

Calculate the oxidation number of all the atoms in the following well

1.	Calculate the oxidation number of all the atoms in the following well known oxidants. KMnO_4,K_2Cr_2O_7, KClO_4
Answer» ANSWER :`K(+1), MN(+7), O(-2),K(+1) , Cr (+6) , O (-2) ,K+(1)`