Q.
Arrange the following orbitals in decreasing order of energy.
A. n=3,l=0,m=0
B. n=4,l=0,m=0
C. n=3,l=1,m=0
D. n=3,l=2,m=1
The correct option for the order is :
(A) n=3;l=0;m=0;3s orbital
(B) n=4;l=0;m=0;4s orbital
(C) n=3;l=1;m=0;3p orbital
(D) n=3;l=2;m=0;3d orbital
As per Hund's rule energy is given by (n+l) value. If value of (n+l) remains same then energy is given by n only.