The quantum mechanical model of the hydrogen atom requires that if the principal quantum number is 5,there will be how many different permitted orbital quantum number(s)?
A) 4
B) 10
C) 5
D) 25
E) 11

Question

The quantum mechanical model of the hydrogen atom requires that if the principal quantum number is 5,there will be how many different permitted orbital quantum number(s)?
A) 4
B) 10
C) 5
D) 25
E) ​11

Quizplus · Accepted Answer

For a hydrogen atom with principal quantum number n, the possible values of the orbital quantum number l range from 0 to n-1. Therefore, if n=5, the possible values of l are 0, 1, 2, 3, and 4, giving a total of 5 permitted orbital quantum numbers.

The Quantum Mechanical Model of the Hydrogen Atom Requires That