If the principal quantum number for hydrogen is 7,which one of the following is not a permitted orbital magnetic quantum number for that atom?
A)10
B)-2
C)0
D)5
E)3

Question

If the principal quantum number for hydrogen is 7,which one of the following is not a permitted orbital magnetic quantum number for that atom?
A)10
B)-2
C)0
D)5
E)​3

Quizplus · Accepted Answer

The allowed values for the magnetic quantum numbers for an atom with principal quantum number n are -n ≤ l ≤ n. For hydrogen with n=7, the permitted values of l are -7 ≤ l ≤ 7. Therefore, the magnetic quantum number of 10 is not permitted as it exceeds the range.

If the Principal Quantum Number for Hydrogen Is 7,which One