CUET · CHEMISTRY · PYQ PAPER 2023
Match List I with List II:
| List-I | List-ll |
| A. \(Fe ^{2+}\) | I. 2.84 BM |
| B. \(Ni ^{2+}\) | II. 0.00 BM |
| C. \(Mn ^{2+}\) | III. 4.90 BM |
| D. \(Zn ^{2+}\) | IV. 5.92 BM |
- A A-I, B-III, C-II, D-IV
- B A-I, B-III, C-IV, D-II
- C A-III, B-I, C-IV, D-II
- D A-III, B-IV, C-I, D-II
Answer & Solution
Correct Answer
(C) A-III, B-I, C-IV, D-II
Step-by-step Solution
Detailed explanation
A. \(\text{Fe}^{2+}\): \([Ar]3d^6\) Unpaired electrons \(n=4\) \(\mu = \sqrt{n(n+2)}\) \(\mu = \sqrt{4(4+2)} = \sqrt{24} \approx 4.90\) BM So, A-III. B. \(\text{Ni}^{2+}\): \([Ar]3d^8\) Unpaired electrons \(n=2\) \(\mu = \sqrt{2(2+2)} = \sqrt{8} \approx 2.84\) BM So, B-I. C.…
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