Question

Which of the following combinations of quantum numbers (n, l, ml, ms) do not represent permissible solutions of the schrodinger equation for the electron in the hydrogen atom?
a) 9, 7, -4, 1/2
b) 8,2, 2, 1/2
c) 6, -5, -1, 1/2
d) 6, 5,-5, 1/2
e) all of the above

Answer 1

Option c. 6, -5, -1, 1/2

Because the second quantum number, l, cannot be negative.

The values of l are restricted to the range 0 to n -1, which in this case is 0, 1, 2, 3, 4 and 5.