Answer:
CrO4 is the "chromate" ion and has a -2
since there are 2 and the overall charge of Mn(CrO4)2 is zero.. Mn is +4
O is -2 as it usually is...
so Cr is +6
The The oxidation state of each element in Mn(Cro4)2 is
Oxidation state of Mn is +4
Oxidation state of is -2
Oxidation state of Cr is +6
Explanation :
The oxidation number denotes the number of electrons the atom loses in a chemical compound.
Also, oxidation number is equal to the charge of the ion. In the above compound oxidation state of Cro4 is -2 and there are two ions together. Thus, there oxidation state would be -4.
Mn have the oxidation state of +4. And oxidation charge of oxygen is always -2. In equation Cro4 there are 4 oxygen each having oxidation charge of -2. Making it -8 in total. Cro4 has its oxidation charge of -2. Thus adding up the charges it turns out to be +6 for chromium.
