Quantum numbers and their significanceEasy

Degenerate Orbitals in Multi-electron Atoms

In a multielectron atom, which of the following orbitals described by three quantum numbers with have same energy in absence of electric and magnetic fields?
A. n = 1, 1 = 0, m₁ = 0
B. n = 2, 1 = 0, m₁ = 0
C. n = 2, 1 = 1, m₁ = 1
D. n = 3, 1 = 2, m₁ = 1
E. n = 3, 1 = 2, m₁ = 0
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