Step 1: Understanding Inner and Outer Orbital Complexes. Inner orbital complexes involve the use of -orbitals from the inner shell (typically the -orbitals in transition metals). This type of hybridization leads to low-spin complexes, where ligands coordinate using these inner -orbitals.
Outer orbital complexes involve the use of -orbitals from the outer shell (typically -orbitals for transition metals in higher oxidation states). This type of hybridization leads to high-spin complexes, where ligands coordinate using these outer -orbitals.
Step 2: Identifying the Hybridization in .} Cobalt in the oxidation state has an electronic configuration of , and the complex uses inner -orbitals for bonding with the ligands. The hybridization results in an inner orbital complex.
Step 3: Identifying the Hybridization in .} Nickel in the oxidation state has an electronic configuration of , and the complex uses outer -orbitals for bonding. The hybridization results in an outer orbital complex. Thus, is an inner orbital complex, while is an outer orbital complex.