Which of the following processes will release the most energy? (LO 6.9) (a) (b) (c) (d)

Video transcript

Hey everyone were asked to choose a process that will release the greatest amount of energy. Now. In order to answer this question, we need to look at our electron affinity trends. As we've learned. Our electron affinity increases as we move from left to right in our periodic table and decreases as we move down a period in our periodic table. This is important because the higher the electron affinity, the higher our energy released. So looking at our answer choices, we have neon. Now we know that neon is a noble gas which doesn't really gain electrons since it has a completely filled P shell. So neon can't be our answer since it will have the lowest electron affinity among all these choices. Next we're looking at bro mean and cesium. Looking at our periodic table, we see that browning is in our group seven A. And cesium is lower than roaming and in our group one A. So that means cesium will have a lower electron affinity than our browning and it will be in between neon and grooming. So it can't be our answer Next. We have to compare B and D. Which both have roaming. The difference is is that B. Is the second electron affinity of grooming. Now the second electron affinity of bromine will have a positive value because energy is needed to add an electron to a negative ion. So our answer here has to be D and D. Will release the greatest amount of energy due to having the higher electron affinity. Now I hope that made sense. And let us know if you have any questions.