JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
Match the LIST-I with LIST-II
| List-I Complex ion | List-II Calculated spin only magnetic moment (BM) |
|---|---|
| A. \([Cr(H_2O)_6]^{2+}\) | I. \(3.87\) |
| B. \([Co(H_2O)_6]^{2+}\) | II. \(5.92\) |
| C. \([Cu(H_2O)_6]^{2+}\) | III. \(4.90\) |
| D. \([Mn(H_2O)_6]^{2+}\) | IV. \(1.73\) |
Choose the correct answer from the options given below:
- A A-I, B-III, C-IV, D-II
- B A-II, B-I, C-III, D-IV
- C A-IV, B-II, C-I, D-III
- D A-III, B-I, C-IV, D-II
Answer & Solution
Correct Answer
(D) A-III, B-I, C-IV, D-II
Step-by-step Solution
Detailed explanation
The spin-only magnetic moment is given by the formula \(\mu = \sqrt{n(n+2)}\) BM, where \(n\) is the number of unpaired electrons. A. \([Cr(H_2O)_6]^{2+}\): Chromium is in the \(+2\) oxidation state. The electronic configuration of \(Cr^{2+}\) is \([Ar] 3d^4\). Since \(H_2O\) is…
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