Exercise 8.40 with feedback You may want to reference(pages 329-332) Section 8.8

Question

Exercise 8.40 with feedback You may want to reference(pages 329-332) Section 8.8 while completing this problem Part A Choose the element with the more negative (more exothermic) electron afinity from each pair Match the words in the left column to the appropriate blanks in the sentences on the right Reset Help In When comparing the two elements Si and P, the element with the more negative electron afinity is Na When comparing the two elements Mg and S the element wth the more negative electron afnty is When comparing the two elements H and Na the element with the more negative electron afinity is Mg When comparing the two elements In and I the element with the more negative electron afinityis Si Submit uty Answers Gve Up ulo e @ 1 Type here to search 20

Explanation / Answer

P is already a half filled electronic configuration and hence addition or removal of electron will result into disturbance of more stable half filled electron and that is why is has less electron affinity that Si.

Si>P more negative elecronaffinity

S is more negative electron affinity than Mg as Mg is a metal and S is a non-metal

H has more negative electron affinity than Na as H can accept electron and for a stable He configuration

I as In is left to I and usually electron affinity becomes more negative in periodic table

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