Problem: Of the following elements, __________ has the most negative electron affinity.A) PB) AlC) SiD) ClE) B

FREE Expert Solution

We’re being asked to determine the element with the highest (most negative) electron affinity


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:

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Problem Details

Of the following elements, __________ has the most negative electron affinity.

A) P

B) Al

C) Si

D) Cl

E) B

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Periodic Trends: Electron Affinity concept. You can view video lessons to learn Periodic Trends: Electron Affinity. Or if you need more Periodic Trends: Electron Affinity practice, you can also practice Periodic Trends: Electron Affinity practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Guloy's class at UH.