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Give the number of protons and electrons in each of the following common ions: $\mathrm{Na}^{+}, \mathrm{Ca}^{2+}, \mathrm{Al}^{3+}, \mathrm{Fe}^{2+}$$\bar{I}^{-}, F^{-}, S^{2-}, O^{2-},$ and $N^{3-}$

$\bullet$ $\mathrm{Na}+=11$ protons and 10 electrons$\bullet$ $\mathrm{Ca} 2+=20$ protons and 18 electrons$\bullet$ $A | 3+=13$ protons and 10 electrons$\bullet$ $\mathrm{Fe} 2+=26$ Protons and 24 electrons$\bullet$ $I-=53$ protons and 54 electrons$\bullet$ $F-=9$ protons and 10 electrons$\bullet$ S2-= 16 protons and 18 electrons$\bullet$ $02-=8$ protons and 10 electrons$\bullet$N3- $=7$ protons and 10 electrons

Chemistry 101

Chapter 2

Atoms, Molecules, and Ions

Atoms, Molecules and Ions

University of Central Florida

University of Maryland - University College

Brown University

Lectures

04:19

Give the number of protons…

04:37

01:13

Determine the number of pr…

01:05

State the number of proton…

All of the problem is to determine the number of protons of electrons in each of these common files. True view Science of elements are elements that have the same number of protons but have a very number of electrons due to the gain or loss of electrons in the items. Let's start with any plus if you take a look at the periodic table. Any has an atomic number of 11 which means it has 11 protons in a neutral atom of N A or sodium. The number of protons and electrons would be equal business. This is an any plus I am. This means that Adam has lost one electron because an electron is negatively charged. So when it loses an electron, it gains a positive charge. In this case, since a neutral number of electrons 11 11 minus one would mean we have 10 electrons in this iron if we take a look at sea, a two plus the atomic number is 20 so it has 20 protons, and since it has a charge of two plus, we know that it's lost two electrons as its gain. A charge of plus two. It's a 20 minus two would equal 18 electrons not only move onto, I minus I am. The periodic table shows that it has an atomic number of 53 which means that it has 53 protons in a neutral atom of iodine. You would all have an equal number of protons and electrons, therefore, and a neutral atom of iodine. You would have 53 electrons, but since you haven't I minus charge, it's getting more negative. So you've just gained one electron. Since you've gained one electron 53 plus one would mean that this iron has 54 electrons. Next, we have F minus, which is similar I minus, but its atomic number is nine, so it has nine protons, and since it has a minus one charge, it's gained an electron because it's gotten more negative. And so the number of electrons would be nine plus one, which is 10 for the aluminum three plus adam for the aluminum three plus I am. We see that the atomic number is 13 so the number of protons is 13 protons, and since it's losing electrons, it has a positive church. It has a positive charge off, plus three, so it's lost three electrons in the neutral Adam. Therefore, 13 minus three is 10 electrons. Next we have F E two plus. If he has an atomic number of 26 so it has 26 protons, then a neutral atom of Effi would have 26 electrons that since it has a plus to charge, we know that it's lost. Two electrons 26 minus two is equal to 24 electrons. Next we had as to minus s has an atomic number of 16. So we know that it has 16 protons and now we see that it has a minus two charge. And since it's getting more negative, it means it's gain two electrons from the neutral Adam. Therefore 16 plus two is equal to 18 electrons. Next we have oxygen. I am with the Tu minus charge. So if we take a look at the periodic table, oxygen has an atomic number of eight. So we know that it has eight protons with an eye on charge of minus two. We know that it's gained two electrons, so eight plus two is 10. Finally be have a nitrogen. Adam and nitrogen has an atomic number of seven, so it has seven protons, but since it has a minus three charts, it's getting more negative and it's gained electorates. Since it's gained three more electrons from the neutral atom, we know that it has seven plus 3 10 electrons, so these are the values for the number of protons and electrons for each of these common ions.

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