Total number of electrons in Cu2+ for which the summation of azimuthal quantum number and magnetic quantum number is zero is:
Correct answer: B. 11 or 12
- A. 7 or 8
- B. 11 or 12
- C. 5 or 6
- D. 10 or 11
Explanation
Copper (Cu) has an atomic number of 29, meaning it has 29 electrons in its neutral state. When it loses 2 electrons to form Cu2+, it has 27 electrons remaining. The azimuthal quantum number (l) and the magnetic quantum number (m) for these electrons can be evaluated based on their electron configuration. The sum of these two quantum numbers can indeed equal zero under certain configurations, particularly for the outermost s and p orbitals. The only option that correctly reflects the electron count and possible quantum number conditions is Option B (11 or 12), as it directly correlates to the electrons present after ionization. Other options inaccurately represent the total electron count or fail to consider the quantum numbers involved.
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