The quantum numbers of six electrons are given below. Arrange them in order of increasing energies. If any of these combination(s) has/have the same energy lists:





Q.62:- The quantum numbers of six electrons are given below. Arrange them in order of increasing energies. If any of these combination(s) has/have the same energy lists:

1. n = 4, l = 2, ml  = –2 , m s = –1/2

2. n = 3, l = 2, ml  = 1 , m s = +1/2

3. n = 4, l = 1, ml  = 0 , m s = +1/2

4. n = 3, l = 2, ml  = –2 , m s = –1/2

5. n = 3, l = 1, ml  = –1 , m s = +1/2

6. n = 4, l = 1, ml  = 0 , m s = +1/2

Answer:-
The orbitals occupied by the electrons are:
(1) 4d
(2) 3d
(3) 4p
(4) 3d
(5) 3p
(6) 4p
Same orbitals will have same energy and higher the value of (n+l) higher is the energy,
Their energies will be in order: (5)<(2)=(4)<(6)=(3)<(1)