Which transition metal does not form 'MO' type oxide? ( M = transition metal)

Step-by-step solution

Sc , electronic configuration =1 ~s ^2 2 ~s ^2 2 p ^6 3 ~s ^2 3 p ^ 4 ~s ^23 ~d ^1 to form the oxide Sc have to remove 20 electrons from its d and s-orbital. It form a very unstable configuration. Sc will show +3 oxidation state and make inert gas configuration and does not form oxide.