The Crystal Field Stabilization Energy (CFSE) and magnetic moment (spin-only) of an octahedral aqua complex of a metal ion M Z + are - 0 . 8 Δ 0 and 3 . 87 BM , respectively. Identify M Z + :

Step-by-step solution

CFSE for octahedral complex = - 0 . 4 n t 2   g + 0 . 6 n eg Δ 0 + n ( P )  As  μ = 3 . 87 B M  so number unpaired electron  = 3 . Metal ion configuration CFSE 27 Co 2 + = 3   d 7 t 2   g 2 , 2 , 1 , e g 1 , 1 CFSE = - 0 . 8 Δ o 25 Mn 4 + = 3   d 3 t 2 g 1 , 1 , 1 , e g 0 , 0 CFSE = - 1 . 2 Δ 0   V 23 2 + = 3   d 3 t 2 g 1 , 1 , 1 , e g 0 , 0 CFSE = - 1 . 2   Δ 0 Cr 24 3 + = 3   d 3 t 2 g 1 , 1 , 1 , e g 0 , 0 CFSE = - 1 . 2 Δ