MCQ
Total number of electrons in $“Cu”$ atom having $m_l = 0$
- A$9$
- ✓$13$
- C$10$
- D$6$
✓
Answer
Correct option: B.
$13$
b
Electronic configuration of $Cu(29) = 1s^2\ 2s^2\ 2p^6\ 3s^2\ 3p^6\ 4s^1\ 3d^{10}$
Electronic configuration of $Cu(29) = 1s^2\ 2s^2\ 2p^6\ 3s^2\ 3p^6\ 4s^1\ 3d^{10}$
$\therefore m_l = 0$ will be $= 2 + 2 + 2 + 2 + 2 + 1 + 2 = 13$
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