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NEET Chemistry QUESTION #1072
Question 1
Out of the following complex compounds, which will have minimum conductance in solution?
  • \([\text{Co(NH}_3)_6]\text{Cl}_3\)
  • \([\text{Co(NH}_3)_5\text{Cl}]\text{Cl}\)
  • \([\text{Co(NH}_3)_3\text{Cl}_3]\)✔️
  • \([\text{Co(NH}_3)_4\text{Cl}_2]\text{Cl}\)
Correct Answer Explanation
\([\text{Co(NH}_3)_3\text{Cl}_3]\) is a non-electrolyte — all chlorides are inside the coordination sphere and no ions are released in solution. Minimum conductance means fewest ions in solution. This complex dissociates into 0 ions, giving minimum (zero) ionic conductance.