need help with this asap

15 Predict and explain (a) which of the complexion [Ru(en)] and [Fe(en), 12+ is damagnetic and which is par magnetic. For the paramagnetic son determine the effective magnetic moment (b) the number of unpaited electrons and effective magnetic moment expected for the tetrahedral complex (MCT (c) whether the tetrahedral complex [Cu(NH) is damaguetic or parameter. If paramagnetic calculate the effective metic met (d) whethet octahedral [Mn(CN)' or [Fect has the greater number of unpaired electrons. Determine the effective magnetic moment for each species