Questions
Given this set of quantum numbers for a multi-electron atom: and . What is the next higher allowed set of n and l quantum numbers for this atom in its ground state?
detailed solution
Correct option is B
When given a set of quantum numbers, the 2s orbital of a multi-electron atom is represented as n=2,l=0.
For this atom in the ground state, the next highest permitted set of "n" and "l" quantum numbers is "n=2,l=1." This is equivalent to the 2p orbital.
Recall that the orbital with a greater sum (n+l) value has a higher energy.
(n+l)=(2+0)=2 for the 2s orbital.
Hence, the correct option is B
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