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Compare the number of protons and electrons in an atom, the number of protons and neutrons, and the number of electrons and neutrons....

Question

Compare the number of protons and electrons in an atom, the number of protons and neutrons, and the number of electrons and neutrons.

Compare the number of protons and electrons in an atom, the number of protons and neutrons, and the number of electrons and neutrons.



Answers

Compare the number of protons and electrons in an atom, the number of protons and neutrons, and the number of electrons and neutrons.

No work on problem 10 from chapter for this problem when asked to compare the mass, uh, relative charge of these sub atomic particles so we can draw in a little table here to compare them. So we'll have protons, neutrons and elections, of course. And then we can compare with their relative charge, their mass and there relative mass. So relative means a relative of another sort of normalized based on these common values. And so, for the relative charged protons, his positive one, we know that neutrons are have no charge and electrons are negative one. So the mess the absolute mass for Proton is 1.673 times 10 to the negative, 24 grams from the neutron. It's very similar, but slightly larger, certainly more massive. At 1.675 times tended mice, 24 grands, and the election is much smaller at 9.11 times 10 to the minus 28 grams. And so if we look at their relative man's, we make it relative to the proton. You see the proton and the neutron roughly the same Route one, but the electron is about 81,840 times smaller than the proton

And I will work on problem 16 from chapter four. This problem. We're asked to determine the number of protons, electrons and neutrons for isotopes listed at a table. And we need to name each isotope and write its symbol. So first, we can produce the table here. So first we have element. Uh, we have from the table the atomic number and mass number. We want to know the number of protons, number of electrons, number of neutrons, and then the name of the ascent Hope and it's symbol. So first we concert with first Element, which is calcium. We have calcium first, after that will work on oxygen. Then we have iron, zinc and mercury. So calcium, the, uh, atomic number and mass number which were given you're 20 and 46 so atomic number should equal to the number of protons and number of electrons we have. 20 of those number of neutrons will be the mass number, minus the atomic number. So it's 26 since the mass number is the number of protons and neutrons combined. So the name for this ice Ato is calcium, followed by the mass number 46 and then the symbol will be 46 20 c a. For oxygen. We have atomic number eight mass number of 17 number of protons and electrons should be eight. Number of neutrons is the number of mass number minus the atomic number, which is nine. We have oxygen 17 with mass number 17 0 and atomic number of Hey and has ah, atomic number of 26 mass number of 57 number of protons and electrons is 26. Number of neutrons is 57 minus 26 or 31. So we have iron 57 and then we can write this symbol here 57 26 e for iron zinc, atomic number of 30 mass number 64 Protons and electrons is equal to the atomic number. Number of neutrons is equal to 64 minus 30 The name of this isotope zinc 60 or and we have mass number of 64 atomic number of 30 zinc. Finally, we have mercury, which has an a top number of 80 mass number two of four for this ice. It number of protons and electrons is 80. A number of neutrons is 124. We have a name of this ice Ato is Mercury 204 and our symbol will be to a four for the mass number 80 for the atomic number and it's G or are simple.

So now we'll work on problems 60 from Chapter four. This problem were asked about the mass number and how it relates to the number of protons and neutrons set and Adam hats. So these two are actually closely related because the mass number is equal to the sum of neutrons and protons in an Adam, so that is the definition of mass numbers, so

The atomic number describes the number of protons. We consider electrons to have virtually no mass, so we can ignore them. In this case. Now, you would take the Elektronik Mass minus the atomic number in order to get the neutrons.


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