Please I need you to provide answer to all the questions. Thanks

1.6. How could you distinguish between a square planar and a tetrahedral structure in a nickel(II) complex of which you have a pure sample, without using crystallography? 1.7. You have a set of different ligands of the PR3 type and a large supply of (CO) 5W(thf) with which to make a series of complexes (CO)5W(PR3). How could you estimate the relative ordering of the electron donor power of the different PR3 ligands? 1.8. The stability of metal carbonyl complexes falls off markedly as we go to the right of group 10 in the periodic table. For example, Cu complexes only bind CO weakly. Why is this? What oxidation state, of the ones commonly available to copper, would you expect to bind CO most strongly? 1.9. Low-oxidation-state complexes are often air sensitive (i.e., they react with the oxygen in the air) but are rarely water sensitive. Why do you think this is so? 1.10. MnCp2 is high spin, while Mn(Cp)2(Cp=5C5Me5) is low spin. How many unpaired electrons does the metal have in each case, and which ligand has the stronger ligand field? 1.11. Why does ligand 1.18 bind as a clamshell with the Me and Cl sites mutually cis, and not in a coplanar arrangement with Me and Cl trans