| 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 |
| (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)
Correct Answer: D
Solution :
[d] (4) and (5) belong to \[d\]-orbital which are of same energy.
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