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Coordination Compounds — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryCoordination Compounds3 Marks
Question
Explain the following terms giving a suitable example in each case:
  1. Ambident ligand.
  2. Denticity of a ligand.
  3. Crystal field splitting in an octahedral field.
✓

Answer

  1. Ambident ligand: a unidentate ligand which can co $-$ ordinate to the central metal atom through more than one co $-$ ordinating bond. e.g. $\ce{NO_2^–, SCN^–}$.
  2. The number of donor atoms in ligating groups is known as denticity of that ligand. e.g. in $\ce{C_2O_4^{2–}}$ denticity is $2$.
  3. Crystal field splitting in an Octahedral field: The splitting of d-orbitals under the influence of approaching ligand is known as crystal field splitting for example for $d^4,$ configuration is $\ce{t_{2g }^3e_g^1}$ /or diagrammatic representation.

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