n 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=0`

Options

A. I and ii
B. ii and iii
C. iii and iv
D. iv and v

Answer

D

Explanation

degenerate orbitals have (n+ l) same value