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99 Percentile Qs Bank for JEE MainChemistryCoordination Compounds

Which complex in the following has the highest stability constant at 298 K?

Options

  1. AC d C l 4 2 -
  2. BC d B r 4 2 -
  3. CC d I 4 2 -
  4. DC d C N 4 2 -

Correct answer

D. C d C N 4 2 -

Step-by-step solution

The cyano and ammine complexes are far more stable than those formed by halide ions. This is due to the fact that N H 3 and C N - are strong lewis ligands.

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