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In a multi - electron atom , which of t...

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 and electric fields ?
(A) n=l, 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

(1) and (2)

B

(2) and (3)

C

(3) and (4)

D

(4) and (5)

Text Solution

Verified by Experts

The correct Answer is:
D
(4) and (5) belong to 3d-orbital which are of same energy.
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