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Q.

For which one of the following sets of quantum numbers an electron will have the highest energy?

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a

3, 2, 1, 1/2

b

5, 1, +1, +1/2

c

4, 1, 0, –1/2

d

4, 2, +2, +1/2

answer is B.

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Detailed Solution

1) 3, 2, 1, 1/2  is  3d orbital 

2) 5, 1, +1, +1/2 is  5p orbital 


3) 4, 1, 0, –1/2  is 4p orbital 

4) 4, 2, +2, +1/2 is 4d orbital 

Among all 5p orbital has highest energy 

 

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