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Correct Part B-In the second period (and at the same positions in the third and fourth periods), three exceptions are seen in the general trends for electron afinity. Between which pairs of elements are the exceptions seen? Select THREE Correct answers trom the following F and Ne Be and B C andhN Li and Be B and C D O and F N and O Submit Next > Provide Feedback
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Answer #1

valence shell electron configuration of N is 2s2 2p3.

and electron configuration of C is 2s2 sp2.

so from electron configuration of N, we can see that 2p orbital is half filled but in case of C, 2p have 2 electrons that is less than half filled.

Hence electron configuration of N is more stable than C.

so electron affinity of N is less than that of C.

C and N is the answer.

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