What is the maximum number of elements if the electrons above `n = 4` do not exist in nature ?

Options

A. 40
B. 60
C. 44
D. 100

Explanation

To determine the maximum number of elements if electrons above n = 4 do not exist in nature, we need to calculate the maximum number of electrons that can occupy the energy levels (or shells) up to n = 4.

### Step-by-Step Solution:

1. **Understanding the Principal Quantum Number (n)**:
- The principal quantum number (n) indicates the energy level of an electron in an atom. The values of n can be 1, 2, 3, 4, etc.
- In this case, we are only considering n values from 1 to 4, as electrons above n = 4 do not exist.

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