What is the atomic number of an element if the quantum number of the highest energy electron of the element in the ground state are `n = 4, l = 1,m = - 1,s= 1/2`

Options

A. 31
B. 35
C. 30
D. 32

Explanation

To determine the atomic number of the element based on the given quantum numbers, we will follow these steps:

### Step 1: Identify the Principal Quantum Number (n)
The principal quantum number \( n \) is given as 4. This indicates that the highest energy electron is in the fourth energy level.

### Step 2: Identify the Azimuthal Quantum Number (l)
The azimuthal quantum number \( l \) is given as 1. This corresponds to the p-orbital (where \( l = 0 \) is s, \( l = 1 \) is p, \( l = 2 \) is d, and \( l = 3 \) is f).

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