Answer:
2
Explanation:
What are quantum numbers?
The set of numbers used to describe the position and energy of the electron in an atom are called quantum numbers.
1) Principal Quantum Number
2)Angular Quantum Number
3)Magnetic Quantum Number
4)Spin Quantum Number
n = 4, m = - 2
When I = 0 , m = 0
When I = 1 , m = - 1, 0, 1
When I = 2 m = - 2, - 1, 0, 1, 2
