In a multi-electron atom, which of the following orbitals described by the three quantum numbers will have the same energy in the absence of magnetic and electric field
(i) n=1, l=0, m=0
(ii) n=2, l=0, m=0
(iii) n=2, l=1, m=1
(iv) n=3, l=2, m=1
(v) n=3, l=2, m=0

Options

A. I and ii
B. ii and iii
C. III and IV are correct
D. iv and v

Answer

D