BITSAT2024ChemistryCoordination CompoundsActual
Which of the following complexes will exhibit maximum attraction to an applied magnetic field?
Options
- A[ Zn ( H ₂ O )₆ ]²⁺
- B[ Co ( H ₂ O )₆ ]²⁺
- C[ Co ( en )₃ ]³⁺
- D[ Ni ( H ₂ O )₆ ]²⁺
Correct answer
B. [ Co ( H ₂ O )₆ ]²⁺
Step-by-step solution
Complex with maximum number of unpaired electron will exhibit maximum attraction to an applied magnetic field. [ Zn ( H ₂ O )₆ ]²⁺ d ¹⁰ system t _ 2 ~g ^6 e _ g ^4 0 unpaired e ⁻ [ Co ( H ₂ O )₆ ]²⁺ d ^7 system t _ 2 ~g ⁵ e _ g ^2 3 unpaired e ⁻ [ Co ( en )₃ ]³⁺ d ^6 system t _ 2 ~g ^6 e _ g ^0 0 unpaired e ⁻ [ Ni ( H ₂ O )₆ ]²⁺ d ^8 system t _ 2 ~g ⁶ e _ g ^2 2 unpaired e