Question:
Which of the following complex has the least conductivity? ________.
Which of the following complex has the least conductivity? ________.
Show Hint
The more ions outside the square brackets, the higher the conductivity.
Updated On: Jun 26, 2026
- $[Co(NH_{3})_{5}Cl]Cl_{2}$
- $Cis-[Co(NH_{3})_{4}Cl_{2}]Cl$
- $[Co(NH_{3})_{6}]Cl_{3}$
- $[Co(NH_{3})_{3}Cl_{3}]$
- $trans-[Co(NH_{3})_{4}Cl_{2}]Cl$
Show Solution
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The Correct Option is D
Solution and Explanation
Step 1: Concept
Conductivity depends on the number of ions produced when the complex dissolves in water.
Step 2: Meaning
Ions are formed by the species outside the coordination sphere (brackets).
Step 3: Analysis
(A) gives 3 ions ($1+2$); (B) gives 2 ions ($1+1$); (C) gives 4 ions ($1+3$); (D) is a neutral molecule and gives 0 ions in solution.
Step 4: Conclusion
Since it produces no ions, $[Co(NH_3)_3Cl_3]$ has the least conductivity. Final Answer: (D)
Conductivity depends on the number of ions produced when the complex dissolves in water.
Step 2: Meaning
Ions are formed by the species outside the coordination sphere (brackets).
Step 3: Analysis
(A) gives 3 ions ($1+2$); (B) gives 2 ions ($1+1$); (C) gives 4 ions ($1+3$); (D) is a neutral molecule and gives 0 ions in solution.
Step 4: Conclusion
Since it produces no ions, $[Co(NH_3)_3Cl_3]$ has the least conductivity. Final Answer: (D)
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