What is the relationship between the electron affinity of a singl...

Question

What is the relationship between the electron affinity of a singly charged cation such as Na+ and the ionization energy of the neutral atom?

Accepted Answer

Hello everyone today. We have been given the following problem, identified the relationship between the ionization energy of bromine and the electron affinity of neutral browning. So let's recount some basic definitions. We can start with the definition of our ionization energy. And the ionization energy simply put is the energy needed To lose one electron. So the so the amount of energy it takes to lose one electron from an element. That's the ionization energy. And so if we have our example here for bromide, that bromide is going to be formed when we have a neutral bro mean here and this is going to form our bromide ion. And so this can be better written as bromide undergoing a process. And in that process it is forming a bromine gas as well as losing one electron. So we're going to stick with our second drawing here for our second definition. We have electron affinity and when we think of affinity we can think of liking something loving something, having a strong attraction to something. And so as the name implies, electron affinity is going to be the exact opposite of ionization energy. So electron affinity is going to be the energy needed to gain an electron right? It has an affinity for it has a liking to it. And so what does that mean? It means we're going to have the reverse process. So this first one that I drew is going to be our electron affinity. So that's going to be our neutral bro mean Plus one electron to show that it is gaining and that is going to turn it into a bromide ion. This negative charge is to denote that we gained that negative charge. And so which of these answer choices reflects these two definitions here. With our examples that's gonna be answer choice. A The electron affinity of bromine is going to equal the negative of the ionization energy of bromide right there, both opposite processes. So one positive is going to equal the other being the negative version of that. And so overall, I hope that this helped and until next time.

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