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2 4 Fill in the following - protons table with the JV numbers: #electrons(Mass number...

Question

2 4 Fill in the following - protons table with the JV numbers: #electrons(Mass number

2 4 Fill in the following - protons table with the JV numbers: #electrons (Mass number



Answers

Complete the following table:
$$\begin{array}{|l|c|c|c|c|}\hline \text { Name } & \begin{array}{c}\text { Atomic } \\\text { Symbol }\end{array} & \begin{array}{c}\text { Number of } \\\text { Protons }\end{array} & \begin{array}{c}\text { Number of } \\\text { Neutrons }\end{array} & \begin{array}{c}\text { Number of } \\ \text { Electrons }\end{array} \\ \hline & \begin{array}{c} ^{34}_{16} S\end{array} & & & \\ \hline & & 28 & 34 & \\ \hline \text { Magnesium } & & & 14 & \\ \hline & ^{220}_{86}\mathrm{Rn} & & & \\\hline\end{array}$$

All right, So this question is asking us to complete the table, and we've been given some information to start and you can see that every drawn this table of color coded it. Based on the order that we're going to do this, we're going to start with the Reds. Then we're going to move to the yellows and then the blues. But to start with, obviously you're gonna have to get out your period table. You're gonna have to redraw this table, so make sure that's ready to go. I put it in Excel, so we make sure it's easy to read because it's gonna be a fair amount of writing. Uh, but let's go ahead and begin. So the reason that I highlighted these three first in Red is because those three columns all have to have the same numbers in them. And the reason that they have to have the same numbers is because the atomic number is defined as the number of protons, so definitely those have to be the same. And the number of electrons has to be the same as the number of protons because it is a neutral Adam. So in order to get the positives and the negatives to cancel each other out. Those have to be the same as well. So to start off with weaken immediately fill in even without looking at our period table week and look, we can fill in. Our 13 are are 38 or 14 and are 56 here and also here now to get the rest of them, we do need to look at the periodic table. We need to find calcium, and we need to sign and and so we'll start with N and we confined near the upper right and we confined. The atomic number of N is seven, so that's seven and, of course, is 7 to 7 as well. Make sure you're looking at the upper left corner of the of of the square to find the atomic number. So in the upper right part of the periodic table you'll find an and the upper left corner of that square. You'll see the number seven for calcium. Calcium is near the left. It's the second column in about the fourth row Down might only be the third row. I don't remember exactly. Ah, but ah, but we will find that that is 20. So now the red columns are done. We're going to move on to the yellows. So now that we have the atomic numbers for all of these, we should be able to find these very quickly because the elements are arranged on the periodic table in order of their atomic numbers. So we'll start with end. So if you already forgotten where N was, just find atomic number seven. Just count across until you get to seven, and we confined that end pretty quickly and see that it is nitrogen. Calcium, like we said, is atomic number 20. It's It's near the left hand side, a couple of rows down. The second column in and symbol for calcium is C A 38. You're gonna have to go down from calcium so below calcium you'll find. S R is 38 which is strong. Thiam, 14 is toward the right hand side. Ah, kind of near the top, but not exactly at the top. And that is silicon. It's and then finally, 56 56 is in that same column with calcium and strontium. So near the left hand side, you will sign be a very, um So Redd's it done Yellows, air done. Last thing is the blues. So with the blues, we're looking at the mass number. And if we look at the mass number for nitrogen that is given. And if you look at nitrogen on the periodic table, you'll see that the the mass given for nitrogen on the periodic table is 14. But the mass number here is 15. So right off the bat, we know that's not necessarily going to be exactly the same, so we can put away the periodic table. We don't need it for this part because it's not necessarily the same. What we do need to know is that the mass number is equal to the number of protons, plus the number of neutrons, so 15 is equal to seven. Plus, whatever this is, we know that this has to be an eight so we can subtract. 15 minus seven is eight sued me, and now protons and neutrons together give us 15. Same for this row 40 to minus 20. His 20 to 22 neutrons her calcium, this particular calcium Adam Ah, to go the other way. We just need to add these together as we've got our 50 in our 38 gives us 88 16 post 14 gives us 30. And then down here, we've got a subtraction again. So ah, 138 minus 56 is 80 to

Nickel two plus. And so the atomic number we have said is equal to 28, which is the number of protons, the charge is plus two. So the number of electrons, It's equal to 28 take away two. That's equal to 26. Where the number of protons is still 28. So we have protons is equal to 28 And the electrons equal to 26 because of the charge. And then we can do the exact same Reasoning for the remainder of the examples you have S 2-. That is 16. The electrons is 16- 18. Protons is 16 and electrons is 18 continuing on. We have a B minus. So what we have is the third family atomic number is 35. And so the electron count is able to 35 add the charge which is one and we get 36. So the proton is 35, the electron is 36. And the second to last example cr three plus Z is equal to 24 and we have two plus three charge. So the electron count is 24. Take away three, we get 21, so protons is 24 Electrons is 21.

Let's fill in the following table a hand assuming each column represents a neutral atom. For the first column Zinc, Zinc has an atomic number of 30 30 protons. 30 electrons for neutral atom mass numbers 65 number of neutrons would be mass number minus number of protons, 35 neutrons. Second column 44 protons, neutral atom, 44 electrons. The mass number would be a number of protons plus the number of neutrons for 101 number of protons 44 is equal to the atomic numbers. So this is the element Brittany. Um And last number is one on 1 Third column number of electrons is 38 neutral atom. Number of protons is 38. The mass number of the 38 number of protons plus 49 number of neutrons give us 87 For the mass number Number of protons is 38, which means the atomic number is 38. The element is strontium Mass # 87. Fourth column number of electrons is 47. Number of protons would be 47. Number of neutrons would be the mass number minus number of protons To give us 61 neutrons. Atomic number 47 elements silver, Last # one and Wait. And for the fifth column 92 protons gives us 92 electrons, number of neutrons to 35 minus 92 to give us 143 neutrons, And atomic number 92 is the element uranium And a mass number of to 35.

In this podcast, we are looking to determine the number of protons, neutrons and electrons for a given atom. In part A. Yep. 63. 29. See you. Mm. We have 29 protons and then we have 63 to play. 29 gives us 30 more neutrons. And then, of course, it's neutral. So we have 29 electrons. In the second example, we have 80 35 ft off for me to have 35 protons. And then we have 86. Take away 35. So we have 45 neutrons and it's neutral. So we have 35 electrons to cancel that out. Lastly, we have magnesium, so we've got 24 12 mg. We've got 12 protons. We have 2014, 12 neutrons over 12 neutrons and then we have 12 electrons.


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