How to know which one is outer orbital complex or inner orbital complex?
Answers
Inner orbital complexes are coordination compounds composed of a central metal atom having hybridization of the atomic orbitals including d orbitals of inner shell and s, p orbitals from the outer shell. In other words, the central metal atom of these complexes uses inner shell d orbitals for the hybridization of atomic orbitals. Therefore, these d orbitals are in a lower energy level than s and p orbitals.
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Outer orbital complexes are coordination compounds composed of a central metal atom having hybridization of the atomic orbitals including s, p and d orbitals from the outermost shell. Here, all atomic orbitals involved in the hybridization are in the same energy level. Since the d orbitals involved in this hybridization are located outside the s and p orbitals, the complexes formed from these metal atoms are called outer orbital complexes.