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JEE Main202528 Jan 2025Morning ShiftChemistryStructure of AtomActual

In a multielectron atom, which of the following orbitals described by three quantum numbers will have same energy in absence of electric and magnetic fields? A. n =1, l =0, ~m ₁=0 B. n =2, l =0, ~m ₁=0 C. n =2, l =1, ~m ₁=1 D. n =3, l =2, ~m ₁=1 E. n =3, l =2, ~m ₁=0 Choose the correct answer from the options given below:

Options

  1. AB and C Only
  2. BA and B Only
  3. CC and D Only
  4. DD and E Only

Correct answer

D. D and E Only

Step-by-step solution

array lc A : n =1, =0, ~m _ =0 & 1 ~s B : n =2, =0, ~m _ =0 & 2 ~s C : n =3, =1, ~m _ =1 & 3 p D : n =3, =2, ~m _ =1 & 3 ~d E : n =3, =2, ~m _ =0 & 3 ~d array In absence of electric and magnetic fields, all orbitals of 3d are degenerate

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