1.

Which one of the following sets of quantum numbers represents the highest energy level in an atom?

Answer»

n=4,l=0m=o,s=`+(1)/(2)`
n=3,l=1,m=1s=`+(1)/(2)`
n=3,l=2,m=-2,`s=+(1)/(2)`
n=3,l=0m=0,s=`+(1)/(2)`

Solution :The ORBITAL with HIGHEST (n+l) VALUE will have the highest ENERGY .In the GIVEN sets n=3 ,i=2,m=3=-2,s=+1/2 have n+l=5 i.e., 3d orbital has the highest energy.


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