Amongst the following, the number of oxide(s) which are paramagnetic in nature is

Question

Canvas Classes · Accepted Answer

Paramagnetic species have unpaired electrons.

Step 1 — Check each oxide:

| Oxide | Valence e⁻ | Unpaired? |
|-------|-----------|----------|
|  | All paired (ionic) | No |
|  |  has 1 unpaired e⁻ | Yes ✓ |
|  | 17 valence e⁻ (odd) | Yes ✓ |
|  | 16 valence e⁻ (all paired) | No |
|  | 19 valence e⁻ (odd) | Yes ✓ |
| NO | 11 valence e⁻ (odd) | Yes ✓ |
|  | 18 valence e⁻ (all paired) | No |
|  | 20 valence e⁻ (all paired) | No |

Step 2:  → 4 paramagnetic oxides

Answer: 4

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