In Octahedral coordination entities:
t2g set has lower energy than eg set.
In **octahedral coordination complexes**, the **d-orbitals** split into two sets due to the interaction with the surrounding ligands. The ligands exert a stronger repulsion on the orbitals that are aligned along the axes (the eg set), causing the **eg orbitals** to have higher energy. The **t2g set** of orbitals (those lying between the axes) experiences less repulsion from the ligands and thus has **lower energy**. This is a result of crystal field splitting, where the energy difference between these two sets of orbitals is called **Δoct**. Therefore, the correct answer is **Option 2**: t2g set has lower energy than eg set.
Important Questions from Coordination Compounds
Match List-I with List-II:
List-I List-II (A) Diamagnetic solid (I) CrO₂ (B) Ferromagnetic solid (II) Fe₃O₄ (C) Antiferromagnetic solid (III) NaCl (D) Ferrimagnetic solid (IV) MnO Choose the correct answer from the options given below:
[NiCl₂(PPh₃)₂] is named as:
Inner orbital complex among the following is:
(A) [Co(NH₃)₆]³⁺
(B) [CoF₆]³⁻
(C) [Ni(CN)4]²⁻
(D) [MnCl₆]³⁻
(E) [FeF₆]³⁻
Choose the correct answer from the options given below:
Which will form the most stable complex?
How many Cr-O bonds in dichromate ions are of the same bond length and are in resonance?
