Four possible electron configurations for a nitrogen atom are shown below, but o

Question

Four possible electron configurations for a nitrogen atom are shown below, but only one schematic represents the correct configuration for a nitrogen atom in its ground state. Which one is the correct electron configuration? | 11 | | 1 1 2p Configuration A | 1 1s 2s Configuration B111 2s 2p Configuration C 1s 2s Configuration D | 1 | | 11 | | 1 | 1 1s 2s 2p Part A Which one is the correct electron configuration? Part B Which configurations violate the Pauli exclusion principle? Part C Which configurations violate Hund's rule?

Explanation / Answer

configuration A violates Hunds rule because pairing can’t start until all orbitals are singly occupied

configuration B looks good

configuration C violates Pauli exclusion principle as well as Hunds rule because pairing can’t start until all orbitals are singly occupied and two electrons can’t have same spin

configuration D violates Hunds because all electrons should have same spin first until paiting starts

A)

answer: B

B)

Answer: C

C)

Answer: A,C,D

Feel free to comment below if you have any doubts or if this answer do not work

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