Among the following species , , , , , , , , the number of species showing diamagnetism is

Question

Canvas Classes · Accepted Answer

Diamagnetic species have all electrons paired (no unpaired electrons).

Step 1 — MO analysis:

| Species | e⁻ | Unpaired e⁻ | Magnetic |
|---------|-----|------------|----------|
|  | 14 | 0 | Diamagnetic ✓ |
|  | 13 | 1 | Paramagnetic |
|  | 15 | 1 | Paramagnetic |
|  | 16 | 2 | Paramagnetic |
|  | 16 | 2 | Paramagnetic |
|  | 15 | 1 | Paramagnetic |
|  | 17 | 1 | Paramagnetic |
|  | 18 | 0 | Diamagnetic ✓ |

Step 2:  and  → 2 species

Answer: 2

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