In a multi-electron atom, which of the following orbitals described by the three quantum members will have the same energy in the absence of magnetic and electric fields [AIEEE 2005] (1) \[n=1,\,l=0,\,m=0\] (2) \[n=2,\,l=0,\,m=0\] (3) \[n=2,\,l=1,\,m=1\] (4) \[n=3,\,l=2,\,m=0\] (5) \[n=3,\,l=2,\,m=0\]

In a multi-electron atom, which of the following orbitals described by

1.	In a multi-electron atom, which of the following orbitals described by the three quantum members will have the same energy in the absence of magnetic and electric fields [AIEEE 2005] (1) \[n=1,\,l=0,\,m=0\] (2) \[n=2,\,l=0,\,m=0\] (3) \[n=2,\,l=1,\,m=1\] (4) \[n=3,\,l=2,\,m=0\] (5) \[n=3,\,l=2,\,m=0\]
A.	(1) and (2)
B.	(2) and (3)
C.	(3) and (4)
D.	(4) and (5)
Answer» E.

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