BITSAT Chemistry Question (2024) — Solution

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