# How many possible orbitals are there for n=100?

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Now the principle quantum number is 100 (n=100).

The number of orbital is given by the **Azimuthal Quantum Number, **which is denotate by "l" and its value ranges from 0 to (n-1)

So the number of orbitals would be 0 to (n-1) that is 0 to 99 that is 100 orbitals.