The chemical formula for manganese ferrite may be written as

The chemical formula for manganese ferrite may be written as (MnFe2O4)8 because there are eight formula units per unit cell. If this material has a saturation magnetization of 5.6 ( 105 A/m and a density of 5.00 g/cm3, estimate the number of Bohr magnetons associated with each Mn2+ ion.