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  4. The total number of orbitals in the fifth energy level is

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Q. The total number of orbitals in the fifth energy level is

Chhattisgarh PMTChhattisgarh PMT 2008

Solution:

The total number of atomic orbitals (total $m$ ) in nth shell is equal to $n^{2}$.
So, in the fifth shell $=5^{2}=25$