f-orbitals cannot be present in which of the following shell ?
`n=1,n=2,n=3,n=4,n=5`
Hint `: 'l' =0` to `( n-1) , ` f-orbital 'l' =3

Explanation

To determine in which shell the f-orbitals cannot be present, we need to analyze the relationship between the principal quantum number (n) and the azimuthal quantum number (l).

### Step-by-Step Solution:

1. **Understanding Quantum Numbers**:
- The principal quantum number (n) indicates the shell level.
- The azimuthal quantum number (l) defines the type of orbital:
- l = 0 corresponds to s-orbitals
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