If K and L shells of an atom are full, then what would be the total number of electrons in the atom?

Explanation

To determine the total number of electrons in an atom when the K and L shells are full, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the K and L Shells**:
- The K shell is the first shell (n=1).
- The L shell is the second shell (n=2).

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