FSc Chemistry Book2, CH 6, LEC 4: Oxidation States M.P & B.P (Part 2)
The variable oxidation states because of partially filled d orbitals. The relationship of MP & BP with the Binding forces in metals(Enthalpy of atomization). Anamolous behaviour of Manganese and others explained. Variation in periods 5,6 and 7 including Lanthanides / Actinides.