What are the possible values of principal (n) and azimuthal (l) quantum number for the unpaired electron in the atom of an element whose atomic number is 9 ?

Explanation

To find the possible values of the principal quantum number (n) and the azimuthal quantum number (l) for the unpaired electron in the atom of an element with atomic number 9, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Element**:
- The atomic number 9 corresponds to the element fluorine (F).

2. **Write the Electronic Configuration**:
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