Question

Consider the following sets of quantum numbers:

	n	l	m	s
(i)	3	0	0	+1/2
(ii)	2	2	1	+1/2
(iii)	4	3	-2	-1/2
(iv)	1	0	-1	-1/2
(v)	3	2	3	+1/2

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

(a) (i), (ii), (iii) and (iv)

(b) (ii), (iv) and (v)

(c) (i) and (iii)

(d) (ii), (iii) and (iv).

Answer 1

The correct option is : (b) (ii), (iv) and (v)

Explanation:

(i) represents an electron in 3s orbital.

(ii) is not possible as value of l varies from 0, 1, ... (n - 1).

(iii) represents an electron in 4f orbital.

(iv) is not possible as value of 4f varies from -l ... +1.

(v) is not possible as value of m varies from -l ... +1, it can never be greater than l.