The number of -electrons in is NOT equal to that of:

Question

The number of -electrons in  is NOT equal to that of:

Canvas Classes · Accepted Answer

:  → 6 d-electrons

Checking each option:

| Option | Count |
|--------|-------|
| p-electrons in Ne:  | 6 ✓ |
| s-electrons in Mg:  | 6 ✓ |
| d-electrons in Fe:  | 6 ✓ |
| p-electrons in Cl:  | 11 ✗ |

Wait — Fe has  → 6 d-electrons, same as Fe²⁺. So option (3) should be equal.

Re-checking Cl:  → p-electrons = 6 + 5 = 11 ≠ 6

Actually option (3): d-electrons in Fe = 6 (same as Fe²⁺). So this IS equal.

The answer key gives option (3). This may refer to a different version of the question where

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