原子物理智慧树知到期末考试答案章节答案2024年南开大学

原子物理智慧树知到期末考试答案+章节答案2024年南开大学

答案:20.8nmTheenergyofahydrogenatominthefirstexcitedstateis

(

)

答案:-3.4eVThedeBrogliewavelengthofanelectronwithkineticenergyof100keVis

(

)

答案:3.702pm

答案:3

答案:

答案:Onwhichofthefollowingstatesofhydrogenthespin-orbitinteractionhasnoeffect?(

)

答案:sstate

答案:0

答案:Howlargeisthemagneticfieldgeneratedbytheelectroninthegroundstateofahydrogenatom,atthepositionoftheprotonifitwouldcirculateaccordingtoBohrmodelontheshelln=1?(

)

答案:12.54TIfwehaveatungstenanode(workfunction

f=4.63eV)andelectron

accelerationvoltageof35kV,whatistheminimumwavelengthofthexrays?(

)

答案:3.12pmThemomentumofphotonscorrespondingtotheminimumwavelengthemittedfromx-raytubewhoseoperatingvoltageis120kVis(

)

答案:ThecontinuumspectrumofXraycomesfrom

(

)

答案:BremsstrahlungWhodiscoveredtheXray(

).

答案:RontgenInZntheionizationenergyofKshellis9.659KeVandLshell1.021KeV.ThekineticenergyoftheAugerelectronemittedfromtheLshellis(

)

答案:7.62KeV

答案:Aphotonhaving40keVscattersfromafreeelectronatrest.Whatisthemaximumenergythattheelectroncanobtain?(

)

答案:5.41eV

答案:18.6pmAphotonofwavelength2.0nmCompton-scattersfromanelectronatanangleof90°.Whatisthemodifiedwavelength?(

)

答案:2.00243nmAnX-raytubeoperatesat100kV.Themaximumspeedofelectronsstrikingtheanticathodeis(

)

答案:TheelectronconfigurationofNeonis

(

)

答案:Asystemofelectronsisdescribedbyawavefunctionshouldbe(

)

答案:anti-symmetricThetotalspinoftwoelectronsis(

).

答案:1or0The3sstateofNahasanenergyof-5.14eV.Itseffectivenuclearchargeis(

)

答案:1.14eHowmanyelectronscanbecontainedinMshell(

)

答案:18Thegroundstateofcarbonis(

)

答案:

答案:20

答案:MgThenumberofvaluesallowedtototalangularmomentumjinHeliumatomforagivennon-zerolare

(

)

答案:3Themaximumvalueoftotalangularmomentumforelectronwithl=4(

)

答案:4.5TheBohrmagnetonis(

)

答案:

答案:1.2nm

答案:30InanomalousZeemaneffect,alevelofgive,s,l,jsplitsinto(

)

答案:0or2j+1levelsAnexperimenterwantstoseparatesilveratomsinaStern-Gerlachexperimentbyatleast1cm(alargeseparation)astheyexitthemagneticfield.Toheatthesilver,shehasanoventhatcanreach1000°Candneedstoorderasuitablemagnet.Whatshouldbethemagnetspecifications?(

)

答案:57T·m

答案:

答案:2Forahydrogenatominthe6fstate,theminimumanglebetweentheorbitalangularmomentumvectorandthezaxisis(

)

答案:Asampleofacertainelementisplacedina0.300Tmagneticfieldandsuitablyexcited.HowfarapartaretheZeemancomponentsofthe450nmspectrallineofthiselement?

(

)

答案:2.83pmAnelectronwhoseorbitalquantumnumberis2hasthelengthofangularmomentum(

).

答案:

答案:3.15kmThekineticenergyofaprotonwhosedeBrogliewavelengthis1.0fmis

(

)

答案:617MeVTheexperimentthatconfirmstheexistenceofdeBrogliewavesis(

)

答案:Davisson-GermerexperimentTheaveragevalueof1/rfora1selectroninthehydrogenatomis(

)

答案:

答案:TheexpectationvalueofthepositionofaparticletrappedinaboxLwideofinfinitewellis(

)

答案:L/2

答案:3.0eV

答案:3.5eVThedeBrogliewavelengthsofa46ggolfballwithavelocityof30m/sis(

)

答案:

答案:2.08eVTheratioofthespeedoftheelectroninthegroundstateofhydrogenatomtothespeedoflightis

(

)

答案:1/137Inhydrogenatomtheangularmomentumoftheelectroninthelowestenergystate

(

)

答案:ThelongestwavelengthintheLymanseriesis121.5nmandtheshortestwavelengthintheBalmerseriesis364.6nm.Findthelongestwavelengthoflightthatcouldionizehydrogen.(

)

答案:91.13nmAprotonandanelectron,bothatrestinitially,combinetoformahydrogenatominthegroundstate.Asinglephotonisemittedinthisprocess.Whatisitswavelength?(

)

答案:91.2nmWhatdeterminesthedifferenceinenergybetweentwoenergylevels?(

)

答案:distancebetweenthetwoenergylevelsWhenanelectronjumpsfromitsorbittoanotherorbit,energyis(

).

答案:bothWhatistheshortestwavelengthpresentintheBrackettseriesofspectrallines?(

)

答案:1.46mmAbeamofelectronsbombardsasampleofhydrogen.ThroughwhatpotentialdifferencemusttheelectronshavebeenacceleratedifthefirstlineoftheBalmerseriesistobeemitted?(

)

答案:12.1VIftheelectroninhydrogenatomjumpsfromthethirdorbittosecondorbit,thewavelengthofthemittedradiationisgivenby(

)

答案:36/5RAccordingtoBohrmodelofhydrogenatom,theradiusofstationaryobitcharacterizedbytheprincipalquantumnumbernisproportional(

)

答案:Foran8.0MeVαparticlescatteringfromagoldatom(Z=79)ofradius0.135nm,thelargestscatteringangle,θis?(

)

答案:InRutherfordatomicmodelalphaparticleswerestrokedon

(

)

答案:goldStatethemassofAvogadro’snumberofatomsforCopper(

).

答案:63.55gForaluminum(Z

=13)andgold(Z

=79)targets,whatistheratioofαparticlescatteringatanyangleforequalnumbersofscatteringnucleiperunitarea?(

)

答案:36.93Accordingtostructureofatomelectronshouldfallin(

)?

答案:nucleusThemassofaprotonis(

)

答案:

答案:0.84WhichofthefollowingisnotavalidconclusionfromRutherford’salphaparticlescatteringexperiment?(

)

答案:Thenucleusmustbepositivelycharged

答案:

答案