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Posted: Thu Nov 02, 2017 10:15 pm
by mayapartha_1D

I have a question regarding electron affinity trends. For problem 67 part B, the question is which has the higher electron affinity: nitrogen or chlorine. The answer should be nitrogen because it is to the right of chlorine, but in the book it says the answer is chlorine. Why is this??


Re: 2.67

Posted: Thu Nov 02, 2017 11:19 pm
by Emily Glaser 1F
If you look at the periodic table, chlorine is actually to the right of nitrogen. Maybe you got confused with C and Cl. Also,the electron affinity of Chlorine is higher than Nitrogen since chlorine only needs one more electron to fill its shell.

Re: 2.67  [ENDORSED]

Posted: Sat Nov 11, 2017 9:20 am
by Charles Ang 1E
A quick way to know which element has a higher electron affinity is to look at the number of valence electrons it has. Chlorine has 7; whereas nitrogen has 5. Therefore, Chlorine is going to hold its outer electrons more strongly.