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How many protons and how many neutrons are there in a nucleus of (a) neon, $_{10}^{21} \mathrm{Ne}(\mathrm{b})$ zinc, $_{30}^{65} \mathrm{Zn}(\mathrm{c})$ silver, $_{47}^{108} \mathrm{Ag}$
a. 11 number of neutronsb. 35- number of neutronsc. 61 - number of neutrons
Physics 103
Chapter 30
Nuclear and High-Energy Physics
Atomic Physics
Nuclear Physics
Particle Physics
Rutgers, The State University of New Jersey
University of Washington
Hope College
University of Winnipeg
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for this question. It says how many protons and how many neutrons are there in the nucleus of these different nuclei for neon zinc and silver? So, to do this, I'm gonna first consider the, um uh the equation here for a nuclear number where the total atomic number A is equal to the number of protons see, plus the number of neutrons. And so to get the number of neutrons, then we just have to take in equals a minus c. So when you're looking at an Adam, it looks something like this. So here is the element we're looking at up here, we have the total atomic number. So this is a and right here we have the, um, number of protons Z so we can use this to calculate everything we need. So in the 1st 1 because for me on it says 2110 any right away we member and we know the number of Protons Z is equal to 10 so we can box that is the number of protons and then is gonna be equal to 21 minus 10 which comes out to equal 11. So there are 11 neutrons our next item in a zinc. It says it's 65 as the atomic number and, uh, 30 as the number of neutrons. So right away we can say, Excuse me, it's a number of protons. We can say, See, it's equal to 30 and then in is going to be equal to 65 minus 30 which is equal to 35. And then one final element we have, um we have silver Wanna wait And 47 soldiers represented as a G. So right away. We know Z is equal to 47. But of course, you know the drill by now and is gonna be able to 108 minus 47. Or you could just comes out to 61 so you can just write in his equal 61 for neutrons.
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