fe(h2o)6 2+ , fe(h2o)6 3+ , fe(cl)2 4- arrange them in increasing order of crystal field theory cft Share with your friends Share 0 Geetha answered this Octahedral geometry have the splitting of crystal field as, t2gegIn Fe(H2O)62+, iron is in Fe2+ oxidation stateSince water is a weak field ligand, the Fe2+ electrons (d6) are distributed ast2g4 eg2So CFSE =-25 t2g + 35 eg = -25 × 4 + 35 × 2 =-25 In Fe(H2O)63+, iron is in Fe3+ oxidation stateSince water is a weak field ligand, the Fe3+ electrons (d5) are distributed ast2g3 eg2So CFSE =-25 t2g + 35 eg = -25 × 3 + 35 × 2 =0In Fe(Cl)24-, iron is in Fe-2 oxidation stateSo its a wrong oxidation state. Kindly check your complexand resend the question. -1 View Full Answer