The statement is wrong
Work Step by Step
For n = 2, l = n-1 = 1. Hence l can take values of 0 and 1 only. So there is no l=2 for n=2.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.