Classification of Elements and Periodicity in Properties

Classification of Elements and Periodicity in Properties

Question

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) and (b)

  • (b) and (c)

  • (c) and (d)

  • (d) and (e)

Answer

D.

(d) and (e)

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