Question:
The number of electrons with magnetic quantum number $m = 0$ in the elements with atomic numbers $Z = 24$ and $Z = 29$ are respectively
The number of electrons with magnetic quantum number $m = 0$ in the elements with atomic numbers $Z = 24$ and $Z = 29$ are respectively
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For elements with partially filled d-orbitals, count the number of electrons in the relevant orbitals to determine the value of $m$.
Updated On: Mar 18, 2026
- 12, 13
- 12, 12
- 13, 12
- 14, 15
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The Correct Option is A
Solution and Explanation
The number of electrons with a particular magnetic quantum number $m = 0$ can be found from the electron configuration. For $Z = 24$ (Chromium) and $Z = 29$ (Copper), the number of electrons with $m = 0$ corresponds to the number of orbitals in the $d$-subshell. For both elements, these are 12 and 13 respectively.
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