Question

In a multielectron atom, which of the following orbitals described by the three quantum numbers will have the same energy in the absence of magnetic and electric fields?
(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
(a) (i) and (ii) (b) (ii) and (iii)
(c) (iii) and (iv) (d) (iv) and (v)

Answer 1

(d) : Orbitals having same (n + l) value in the absence of electric and magnetic field will have same energy.