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Q. No.| Assertion (A): | The ground state configuration of Cr is 3d54s1. |
| Reason (R): | A set of half-filled orbitals containing one electron each with their spin parallel provides extra stability. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Â De Broglie Equation |
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