Ncert Exercises & Solutions

Which of the following sets of quantum numbers are correct?

n l m

1. 1 1 +2

2. 2 1 +1

3. 3 2 -2

4. 3 4 -2

(b, c)

Hence, (d) is incorrect.f

n = 1, l \neq 1 (∵ l < n)

Hence, (a) is incorrect.

n = 2, l = 0, 1 . For l = 1, m = - 1, 0, + 1 .

Hence, (b) is correct.

n = 3, l = 0, 1, 2 . For l = 2, m = - 2, - 1, 0, + 1, + 2 .

Hence, (c) is correct.

n - 3, l \neq 4