Question

In a multielectron atom, which of the following orbitals described by three quantum numbers will have same energy in the absence of magnetic field and electric field : (I) n = 1, l = 0, m = 0

(II) n = 2, l = 0, m = 0

(III) n = 3, 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

Correct option  (d) IV and V

Explanation:

Energies of orbitals are compared by ‘n + l’. In IV and V cases ‘n + l’ values are 5 and n value are 3