Identify the correct trend given below:
(Atomic No. Ti: 22, Cr: 24 and Mo: 42)

Answer

D

Explanation

`Delta_0` of complex `[Mo(H_2O)_6]^(2+)` is greater than that of `[Cr(H_2O)_6]^(2+)`. It is due to the fact that `Mo^(2+)` belongs to second row transition element while `Cr^(2+)` is first row transition element.
Magnitude of crystal field splitting energy `(Delta_0)` depends on the chargne on the metal ion. greater the charge, greater is the crystal field splitting energy. Therefore , `[Ti(H_2O)_6]^(3+) gt [Ti(H_2O)_6]^(2+)` .