NEETChemistryCoordination Compounds
Match List-I with List-II for the corresponding crystal field splitting energies of complexes having the same metal ion, same oxidation state and same ligands. List-I List-II (A) _o = 36000 cm ⁻¹ (I) _o = 18000 cm ⁻¹ (B) _t = 8000 cm ⁻¹ (II) _o = 27000 cm ⁻¹ (C) _o = 27000 cm ⁻¹ (III) _t = 16000 cm ⁻¹ (D) _t = 12000 cm ⁻¹ (IV) _t = 12000 cm ⁻¹ Choose the correct answer from the options given below:
Options
- A(A)-(I), (B)-(III), (C)-(II), (D)-(IV)
- B(A)-(III), (B)-(II), (C)-(IV), (D)-(I)
- C(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
- D(A)-(IV), (B)-(I), (C)-(III), (D)-(II)
Correct answer
C. (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
Step-by-step solution
The relationship between the crystal field splitting energy of octahedral ( _o ) and tetrahedral ( _t ) complexes for the same metal, same oxidation state and same ligands is given by: _t = 4 9 _o Let us calculate the corresponding values for each case in List-I: (A) Given _o = 36000 cm ⁻¹ _t = 4 9 36000 = 16000 cm ⁻¹ . This matches with (III). (B) Given _t = 8000 cm ⁻¹ _o = 9 4 _t = 9 4 8000 = 18000 cm ⁻¹ . This matches with (I). (C) Given _o = 27000 cm ⁻¹ _t = 4 9 27000 = 12000 cm ⁻¹ . This matches with (IV). (D)