Cobalt, a transition metal, forms both the co2+ and co3+ ions. which of the following are the correct formulas and names for the oxides formed by the two different ions? (you’ll have to choose more than one) a) coo3, cobalt(iii) oxide b) coo3, cobalt(ii) oxide c) co2o3, cobalt(iii) oxide d) coo3, cobalt(ii) oxide e) coo3, cobalt(iii) trioxide f) coo, cobalt(ii) oxide g) co2o, cobalt(ii) oxide h) co2o, cobalt(iii) oxide