question_answer

A transitional metal complex adopts \[{{t}_{2g}}^{4}e_{g}^{2}\] configuration.  The  nature  of ligand surrounding the ion is

A)  strong field       

B)  weak field

C)  neutral               

D)         \[+ve\] field

Correct Answer: B

Solution :

According to\[CFT\], if in a transition metal complex the \[d-\]orbitals of the metal ions shows splitting because of the approach of a ligand as shown below. As there is no pairing of electrons and two of its electrons are in high energy orbitals, this is a high spin complex and the ligands causes such high spin states are called weak field ligand.