Question

Select all of the following electronic states that are forbidden:

Answer 1

1.3.4 are the answer options

Answer 2

(1) n=2 .l=2. m=1 { 2d } [ it is not possible as n= 2 then l= 0.,1i.e,s&p orbitals]
(2) n= 1,l=0 m= 1, [ m= 0 * +_ l so m=0 ]
(4) n=4 ,l= 1, m=2 [ m = 0& +_l so m=0,+1 -1 ]