The quantum mechanical model of the hydrogen atom requires that if the principal quantum number = 4,there will be how many permitted orbital quantum numbers?
A)2
B)4
C)8
D)16
E)32

Question

The quantum mechanical model of the hydrogen atom requires that if the principal quantum number = 4,there will be how many permitted orbital quantum numbers?
A)2
B)4
C)8
D)16
E)​32

Quizplus · Accepted Answer

For a given principal quantum number (n), the permissible orbital quantum numbers (l) range from 0 to n-1. Therefore, if n=4, the permissible values of l are 0, 1, 2, and 3. This corresponds to 4 possible orbitals: s, p, d, and f. So, the correct answer is B) 4.

The Quantum Mechanical Model of the Hydrogen Atom Requires That