Problem: Rank these elements according to electron affinity.Ne      Br       Al

FREE Expert Solution

We are asked to rank these elements according to electron affinity.

Ne      Br       Al

Recall that electron affinity is the energy change from the addition of 1 e to a gaseous element/ion


It is represented by this chemical equation:

Atom(g) + e  Ion(g), ΔE = –E.A. 


The trend for electron affinity is as follows: it increases from left to right and decreases down a period in the periodic table. The given elements are:




Note: Nobel gases are not included in the trend and will have the lowest electron affinity. 

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Problem Details

Rank these elements according to electron affinity.

Ne      Br       Al

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