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Q. The number of orbitals associated with quantum numbers $n = 5, \, m_{s} = +\frac{1}{2}$ is :

JEE MainJEE Main 2020Structure of Atom

Solution:

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 $m_{s}=\frac{1}{2}$