-1, 0, 1, 2, 3, 4 and 5 oxidation states
Yes, cobalt has shows three oxidation states.
These are +2,+3 and +4.It is due to availability of vacant d-orbitals in cobalt atom.
Same is the case for most of the other transition and inner-transition elements.
Cobalt has oxidation states of -1, 0, 1, 2, 3, 4, 5
In Cobalt's free state it will always equal 0.
Example: Co= 0, S= 0, Al= 0, etc.
-1, 0, 1, 2, 3, 4, 5 oxidation states
+3
The oxidation state is +3.
K = +1 oxidation state Cl = +3 oxidation state O = -2 oxidation state
O = -2 oxidation state H = +1 oxidation state
S = +4 oxidation state O = -2 oxidation state
In this ion the oxidation state of sulfur is 6+ and the oxidation state of each oxygen is 2-
3
The oxidation state is +3.
+3
-1, 0, 1, 2, 3, 4 and 5 oxidation states
Copper, Iron, Cobalt, etc.
Cobalt is a transition metal. Its oxidation states are 2 (3).
Co2S3 is cobalt(lll) sulfide.
Cobalt has an oxidation number of 3 (III) in the compound Co2O3.
In the compound Co2O3 cobalt has an oxidation number of 3 while oxygen has an oxidation number is -2.
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
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.
+3