JEE Main202523 Jan 2025Morning ShiftChemistryCoordination CompoundsActual
The d- electronic configuration of an octahedral Co(II) complex having magnetic moment of 3.95 BM is:
Options
- At _ 2 ~g ^3 e _ g ^0
- Bt _ 2 ~g ^6 e _ g ^1
- Ct _ 2 ~g ^5 e _ g ^2
- De ^4 t ₂ ^3
Correct answer
C. t _ 2 ~g ^5 e _ g ^2
Step-by-step solution
Co ²⁺ complex having =3.95 BM Hence number of unpaired electron =3 Co ²⁺ 3 d^7= t _ 2 ~g ^5 e _ g ^2