Problem

Open the Build an Atom simulation (http://opensta…

02:27

Problem 13 Easy Difficulty

Open the Build an Atom simulation (http://openstaxcollege.org/l/16PhetAtomBld) and click on the Atom icon.

(a) Pick any one of the first 10 elements that you would like to build and state its symbol.
(b) Drag protons, neutrons, and electrons onto the atom template to make an atom of your element.
State the numbers of protons, neutrons, and electrons in your atom, as well as the net charge and mass number.
(c) Click on “Net Charge” and “Mass Number,” check your answers to (b), and correct, if needed.
(d) Predict whether your atom will be stable or unstable. State your reasoning.
(e) Check the “Stable/Unstable” box. Was your answer to (d) correct? If not, first predict what you can do to make a stable atom of your element, and then do it and see if it works. Explain your reasoning.

Answer

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Video Transcript

using the building Adam Fete simulation for part A were asked to pick any one of the 1st 10 elements that you would like to build and state it symbol. So I am going to pick the elements. Lithium and its chemical symbol is al I for part B, whereas to use the simulation to meet the atom. So lithium is comprised of three protons. Yeah, four neutrons. And we're making the neutral element three electrons. So let's go ahead and make this element on the simulation. So there we go. You've got neutral Adam of the elements lithium. And when we go ahead and make the simulation, this is what it will look like here, where we've got three protons, four new drugs and three electrons for part C, click on net charge and mass number to check if my answers to be are correct. So if I open up net charge and mass number, we'll take a picture of this here. So net charge and mass number here for our element so we can see that the net charges zero. So that's correct. And the mass number is seven. That's also correct, So net charge is zero. So we were correct in part B and the mass number and is equal to seven. So that would be three protons and for neutrons. So we were also correct there a Z we built in Adam with a mass number of seven, uh, for D Predict whether you're Adam will be stable or unstable and state your reasoning eso for D. I would predict that my Adam would be unstable Azaz. It has one violence electron in thesis and electron shell country. And for e let's whereas to check the stable or unstable box. And in this case here it says that true, it says that the Adam is stable. Hit me. Excuse me. So we're told that the atom is stable here, and, um so my prediction was incorrect. This is stable and has modeled as it is a neutral Adam. So because it is a neutral atom, it is stable, even though it has the one gallons electron in the second orbit

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