Answer to Question #244638 in Chemistry for Dontworry

Question

Which of the following sets of quantum numbers is not possible?

a) n = 4, l = 2, ml = 0

b) n = 2, l = 1, ml = -1

c) n = 1, l = 0, ml = 0

d) n = 3, l = 3, ml = -2

e) n = 3, l = 1, ml = 0

Answer 1

Solution:

The set of quantum numbers n = 3, l = 3, m_l = -2 is not possible for an electron.

Since l can be zero or a positive integer less than (n−1).

For a given value of n = 3, the possible values of l are 0, 1 or 2.

Answer: d) n = 3, l = 3, m_l = -2