Question

Which of the 3d series of transition metals exhibit largest number of oxidation states and why ?

Answer 1

3D series of transition metal contsining D orbitals are also called degenerate orbital

the highest oxidising state of element is manganese (Mn) because of the large number of unpaired electrons in orbitals .

It have +2,+3,+4,+5,+6 and ,+7 oxidation state.

Answer 2

Answer:

Mn (Z = 25) = 3d5 4s2 Mn has the maximum number of unpaired electrons present in the d-subshell (5 electrons). Hence, Mn exhibits the largest number of oxidation states, ranging from +2 to +7.