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ThefollowingquestionsrefertotheBohrmodeloftheatom.a>Defineanelectronshell;b>Defineanelectronorbit;c>Inwhichelectronshellareelectronswiththelowestpossibleenergytobefound?d>Electronstravelathighspeed.Whatstopsthemfro
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更新时间:2022-08-15
问题描述:

ThefollowingquestionsrefertotheBohrmodeloftheatom.

a>Defineanelectronshell;

b>Defineanelectronorbit;

c>Inwhichelectronshellareelectronswiththelowestpossibleenergytobefound?

d>Electronstravelathighspeed.Whatstopsthemfromflyingrightawayfromthenucleus?

e>Howbigisthenucleuscomparedwiththesizeoftheatom?

f>Howheavyisthenucleuscomparedwiththeweightoftheatom?

g>Ifwerideabikequicklyaroundandaroundacirculartrack,weuseupalotofenergy;wegetslowerandsloweraswerunoutofenergyandeventuallystop.Isthiswhatelectronsdotoo?Discuss

(关于化学,全部用英语回答!)

裴伟民回答:
  a>   Anelectronshell,alsoknownasamainenergylevel,isagroupofatomicorbitalswiththesamevalueoftheprincipalquantumnumbern.   b>   Anelectronorbitistheregioninwhichanelectronmaybefoundaroundasingleatom.Specifically,electronorbitsarethequantumstatesoftheindividualelectronsintheelectroncloudaroundasingleatom.   c>   shell1   d>   Becauseoftheelectromagneticattractionbetweennucleus(protons)andelectrons   e>   Anatomisabouttenthousandtimeslargerthananucleusinradius.   f>   Anucleusweighsalmostequaltotheatomit'sin.(anucleustakesmorethan99%inweightofaatom)   g>Thebikestopsbecauseoftheresistancecomesfromground&air.Whileinanatom,there'snosuchkindofresistance.Sotheelectronkeepstheircircularflying.
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