A) 4, 3, 2, +1/2
B) 4, 2, 1, 0
C) 4, 3,-2, +1/2
D) 4, 2, 1,-1/2
E) 4, 2, -2, 0
Correct Answer: D
Solution :
For a 4d electron \[n=4,l=2\] For d sub-shell the value of \[l=2\] \[m=-2,-1,0,+1,+2\] \[s=\pm \frac{1}{2},\pm \frac{1}{2},\pm \frac{1}{2},\pm \frac{1}{2},\pm \frac{1}{2}\] So, the correct alternate is (d) i. e., the correct set of quantum numbers of 4d electron is \[4,2,1,-\frac{1}{2}\]
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