Among the following pairs of complexes, in which case the value is higher for the first one? — Coordination Compounds Chemistry Question

💡 Solution & Explanation

In complexes [Rh(H2O)6]^3+ and [Co(H2O)6]^3+, central metal cations have same oxidation state as well as same ligands and they fall in same group, but $\Delta_o$ of [Rh(H2O)6]^3+ > $\Delta_o$ of [Co(H2O)6]^3+ because Rh^3+ has higher Z_eff value than Co^3+.