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 acid and electric fields?

Q. 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 acid and electric fields?

(a) n = 1, l = 0, m = 0

(b) n = 2, l = 0, m = 0

(c) n = 2, l = 1, m = 1

(d) n = 3, l = 2, m = 1

(e) n = 3, l = 2, m = 0

A. (a) and (b)

B. (b) and (c)

C. (c) and (d)

D. (d) and (e)

Answer: (d) and (e)