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The maximum number of electrons in an atom in which the last electron filled has the quantum numbers $n=3, \ell=2$ and $m=-1$ is
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The correct answer is:
30
Hint:
$\mathrm{n}=3$ and $\mathrm{I}=2$ means $3 \mathrm{~d}$ -orbital. Since five orientations of $\mathrm{d}$ -orbitals are degenerate, $\mathrm{m}=-1$ can be assigned to any one. For maximum number of electrons as asked, answer should be atomic number 30.
$\mathrm{n}=3$ and $\mathrm{I}=2$ means $3 \mathrm{~d}$ -orbital. Since five orientations of $\mathrm{d}$ -orbitals are degenerate, $\mathrm{m}=-1$ can be assigned to any one. For maximum number of electrons as asked, answer should be atomic number 30.
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