JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
Match List - I with List - II.
| List - I Chromium (III) Complexes (en = ethylene diamine) | List - II \(\Delta_0\) (cm\(^{-1}\)) |
|---|---|
| A. \([Cr(CN)_6]^{3-}\) | I. \(15,060\) |
| B. \([CrF_6]^{3-}\) | II. \(17,400\) |
| C. \([Cr(H_2O)_6]^{3+}\) | III. \(22,300\) |
| D. \([Cr(en)_3]^{3+}\) | IV. \(26,600\) |
Choose the correct answer from the options given below :
- A A-I, B-II, C-III, D-IV
- B A-II, B-III, C-IV, D-I
- C A-III, B-IV, C-I, D-II
- D A-IV, B-I, C-II, D-III
Answer & Solution
Correct Answer
(D) A-IV, B-I, C-II, D-III
Step-by-step Solution
Detailed explanation
The crystal field splitting energy \(\Delta_0\) depends on the strength of the ligand. According to the spectrochemical series, the order of ligand strength is \(F^- < H_2O < en < CN^-\). Thus, the order of \(\Delta_0\) for the given complexes is…
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