Magnetic moments of M2+ ions (divalent cations ) of 3d-series in the decreasing order is : Zn2+>Sc2+=Cu2+>Ti2+=Ni2+>V2+=Co2+>Cr2+=Fe2+>Mn2+
Write down the number of 3d electrons in each of the following ions:
Ti2+, V2+, Cr3+, Mn2+, Fe2+, Fe3+, CO2+, Ni2+ and Cu2+.
Indicate how would you expect the five 3d orbitals to be occupied for these hydrated ions (octahedral).