Iron (z=26) is highly ferromagnetic. Explain.
Iron (z = 26), with electronic configuration [Ar] 3d6 4s2, contains four unpaired electrons. Hence, iron is strongly ferromagnetic.
Analysis shows that nickel oxide has the formula Ni0.98O1.00. What fractions of nickel exist as Ni2+ and Ni3+ ions?
What type of substances would make better permanent magnets, ferromagnetic or ferrimagnetic. Justify your answer.