Multiple choice

Which of the following is non-ionisable?

  1. [CO (NH3)6] Cl3

  2. [CO (NH3)3 Cl3]

  3. [CO (NH3)4 Cl2] Cl

  4. [CO (NH3)5 Cl] Cl2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A complex is non-ionisable if there are no counter-ions outside the coordination sphere. In [CO(NH3)3Cl3], all ligands are inside the coordination sphere, so it does not ionize in water.

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