The oxidation state is +3.
-1, 0, 1, 2, 3, 4 and 5 oxidation states
K = +1 oxidation state Cl = +3 oxidation state O = -2 oxidation state
+3 oxidation state
-3
Co Is cobalt and exhibits an oxidation state;2, [3]Co 2+ and Co 3+The rest have oxidation states of non-variable numbers.Al is Aluminum;Al 3+Na is sodium;Na +Mg is magnesium;Mg 2+
+3
3
-1, 0, 1, 2, 3, 4 and 5 oxidation states
The cobalt in the formula given has an oxidation number of +3, so that the total charge of the two cobalt ions will balance the total charge of the 3 oxide ions, which have an oxidation number of -2 each.
Cobalt is a transition metal. Its oxidation states are 2 (3).
Variable oxidation state refers to (an element) having more than 1 oxidation states. e.g. Cobalt having oxidation states +2 & +3, similarly Fe having +2 & +3, Cr +2, +3 & +6
-1, 0, 1, 2, 3, 4 and 5 oxidation states
Cobalt has an oxidation number of 3 (III) in the compound Co2O3.
+3
In the compound Co2O3 cobalt has an oxidation number of 3 while oxygen has an oxidation number is -2.
The common valences of cobalt are +2 and +3.
Cobaltous ion has a +2 oxidation state. Cobaltic ion has a +3 oxidation state Cobaltous chloride: CoCl2 Cobaltic chloride: CoCl3