Cobalt, a transition metal, can have an oxidation number of either 2+ or 3+. What are the two possible chemical formula for the chemical combination of cobalt with oxygen?

1 Answer
Jul 25, 2017

Answer:

Well, there is #"cobalt(II) oxide"#, #CoO#.....#"cobaltous oxide"#

Explanation:

And #"cobalt(III) oxide"#, #Co_2O_3#.....#"cobaltic oxide"#.

And a mixed oxidation state oxide exists, #Co_3O_4# (note that I simply added the given formulae together, #"cobalt(II,III) oxide"#).