Question

Name the elements of 3d transition series that show maximum number of oxidation states. Why does this happen?

Answer 1

In 3d-series of transition metals, manganese  has an atomic number of 25 that gives the electronic configuration as [Ar] 3d⁵4s² ,where we see that the maximum number of unpaired electrons is found in manganese atom; so, it can show a maximum oxidation state upto +7.