MCQ
The number of orbitals associated with quantum numbers $n=5,\;m_s=+\frac 12$ is
  • A
    $11$
  • $25$
  • C
    $15$
  • D
    $50$

Answer

Correct option: B.
$25$
b
No. of orbitals $=n^{2}=5^{2}=25$

For $n=5,$ no. of orbitals $=n^{2}=25$

Total number of orbitals is equal to no. of electrons having $\mathrm{m}_{\mathrm{s}}=\frac{1}{2}$

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