Gabrell Talavera ElectronConfiguration Gizmo

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GizmosName:Gab Talavera| DateStudent Exploration: Electron ConfigurationDirections: Follow the instructions to go through the simulation. Respond to the questions andprompts in the orange boxes.Vocabulary:atomic number, alomic radius. Aufbau principle, chemical family, diagonal rule, electronconfiguration.Hundsrule,orbital. Pauli exclusion principle, period, shell, spin, subshellPriorKnowledge Questions (Do these BEFORE using lhe Gizmo.)1.Elvis Perkins, a ralher shy fellow, is gelling on lhe bus shown al rightWhich seat do youthink he will probably sit in? F.1ark this seal with an "E."Elviswillprobably sit in the toplet!seat2.Marta Warren gets onlhebus after Elvis. She is lired after a long day at work. Where doyou think she will sit? Mark this seat with an"M."I think Marta will sil in lhe seat closest to lhe driver.3.In your experience, do strangers gelling on a bus like to sil with olher people if there isan empty seat available?No. they sit in the empty seats if they are available. If nol, they are forced tosit beside a siranger.Gizmo Warm-upJust like passengers getting on a bus. electrons orbit the nuclei of atoms in particular patterns. You willdiscover these patterns (and how electrons sometimes act like passengers boarding a bus) with the EtecfronConfiguref/on Gizmo.To begin, check thatLithiumis selected onlhePERIODIC TAEiLE tab.■■1.The atomic numberis equal to the number of protons in an atom.***How many protons are in a lithium atom?t3•B>7■34TlVCiMnF lI3 protons are in a lithium atom.YZfIfcMSTCP lI2.A neutral atom has the same number of electrons and protons.How many electrons areina neutral lithium atom?3 electronsina neutral lithiumatom.3.Select the ELECTRON CONFIGURATION lab.and checkthat Energy is selected. Click twice inlhe 1sboxat lower left and once inthe 2sbox. Observe the atom model at right.A.Whal do you see?I see 2 electrons spinning close tolhenucleus and 1 electron spinningfar.BClickCheck .Is thiselectron configurationcorrect?Yes.lheelectron configuration is correct.

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Get lhe Gizmo ready:1Activity A:•On the PERIODIC TABLE lab:selectH(hydrogen).1H2Small atoms•Select the ELECTRON CONFIGURATION tab.•Click Reset2LIBeIntroduction:Electrons are arranged inorbitalssubshellsandshells.These levels of organization areshown by lhe boxes of the Gizmo. Each box representsanorbital.Thesubshells are labeled with letters (s, p,d.and I) andlheshells are labeledwilhnumbers.Question: How are electrons arranged in elements with atomic numbers 1 through 10?1.Arrange: TheAufbau principleslates that electrons occupythelowest-energy orbital. WhenEnergyisselected the orbitals are arranged from lowest-energy althebottcm Io highesl-energy at the top. Clickonce in the 1 s box to add an electron to lhe only orbital in lhe s subshell of the first shell.Click Check. What is the electron configuration of hydrogen?1s2.Arrange: ClickNextelement to select helium. Add another electron Io the1sorbital. The arrows representlhe spin oflheelectron. What do you notice about the arrows?I notice lhat one arrow goes up and lhe olher one goes down.ThePauliexclusionprinciple states lhat electrons sharing an orbital have opposite spins.1s23.Check your work: Click Check. What is the electron configuration of helium?4.Arrange: ClickNextelement and create electron configurationsforlithium, beryllium, and boron. ClickCheck Io check your work, and then list each configuration below:Iss1Beryllium:1s22s2Boron:1s22s22p15.Arrange:ClickNext elementto select carbon. Add a second electron Io the firsl 2p orbitalClick Check . What feedback is given?Electrons are nol properly arranged in energy levels.6.Rearrange: Hund's rule states thal electrons will occupy an empty orbitalwhen it is available in that subshell. Rearrange lhe electrons within the 2psubshell and click Check.20II?Is the configuration correct now?Yesu ~Show the correct configuration in the boxes al right:Hand draw in this space orclick here Io select EDIT to use the drawing tool

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7.Compare: How are the electrons inthe 2psubshell similar to passengers getting onabus?The electrons are occupying other 2p sutoshells like bus seats.8.Practice:Inthe spaces below,write and illustrate electron configurations for the next four elements:nitrogen, oxygen, fluorine, and neon. When you are finished, usetheGizmo to check your work. Correctany improper configurations.Nitrogen configuration:1s22s22p:Stist2p□[n□Oxygen configuration:1s22s22p*nisT £2pE U□Fluorine configuration:1s32s22p5Si1i* l2p• dt1Neon configuration:1s22s;2peSiis77t 12pT J77]9.Apply: Atoms are most stable when their outermost shell isfull.Iftheiroutermost shell is not full, atomstend Io gain. lose, or share electrons until the shell fills up. While doing thisatoms react and form chemicalbonds with other atoms.Based on this, what can you infer aboutthereactivity of helium and neon?I can infer from the reactivity of helium and neon that they are stable since they are noble gasses.10.hink and discuss: SelectthePERIODIC TABLE taband look al the second row. or period, of the table.How does this row reflect the subshells of the second shell?This row reflects that there are 2 subshells in this row.

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