Multiple choice

Which of the following statements is not correct about the stability of the complex compounds?

  1. The complexes formed by chelating ligands are more stable than their monodentate analogs.

  2. Chelates with five membered rings are very stable if these contain double bonds.

  3. Greater the number of rings within the chelate, greater will be the stability of the chelate.

  4. Whenever a metal chelate is formed there is decrease in the ionic mobility of the metal.

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B Correct answer
Explanation

This statement is INCORRECT because chelates with five-membered rings are generally MORE stable than those with double bonds (which can introduce strain and reactivity). Chelates with saturated five-membered rings are actually among the most stable configurations.

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