Why Cs2[Cu(CN)4] doesn't exhibit a Jahn-Teller distortion

The only spin magnetic moment of the central metal in the complex Na3[Mn(CN)6] is-HB. The result must be given with three significant figures (for example 7.34) I

Consider the octahedral complex [FeBr6] 4−. In water solution it has an absorption peak at 864 nm with a molar absorptivity (ε) of 3.6 L mol-1 cm-1 .  (I have a, b, and c, I need help with d, e, and f.) (a) What is the energy (in wavenumbers, cm-1 ) of the absorption peak? Show all work. (b) How many valence d electrons does the metal center have? Justify your answer. (c) How many unpaired electrons per molecule would a magnetic susceptibility experiment predict? What would the S number be for this transition metal center? Justify your answers. (d) What electronic transition results from absorption of 864-nm light? (e) Calculate the ligand stabilization energy (in units of ∆o) and units of coulombic (Πc) energy. (f) How would the ligand field strengths (∆o) of [Fe(NH3)6] 2+ and [Fe(bipy)3] 2+ differ from that of [FeBr6] 4−? Why?

Show how Mn2+ and Gd3+ are paramagnetic.

Giving at least 2 reasons, predict whether [Co(OH2)6]2+ or [Co(NCS)4]2- has a higher Kstab.

Systemic name of the coordination compound (Pt(NH3)2(H20)2(CH3CO2)2][CuBr4]

Experiments can measure not only whether a compound is paramagnetic, but also the number of unpaired electrons. It is found that the octahedral complex ion [Fe(CN),]³- has fewer unpaired electrons than the octahedral complex ion [Fe(OH,),J³*. How many unpaired electrons are pre- sent in each species? Explain. In each case, express the CFSE in terms of A..