物理化学ai2003期末考卷a

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1、Na=6.02x1023E=hv=he!A—mvxAp>hEt>hM=n—2兀V2J1_＜分局丿x=厂sin&cos0y=厂sin&sin0ia22丄22r2drdrr2sin6^30r2sin20M-lco/、2.nmy/(x)=寸一sinn2h2Ev=(y+!2)hvk_June,2003FinalExamofPhysicalChemistry(120minutes)departmentsregisternumber^name：scoresNo.12345678scoreNo.910111213141516scoreThisisaclosedbookexam.Useofa

2、calculatorandanEnglishdictionaryispermitted.Showallofyourworkandcheckyourunitscarefully.Don7givehelpto,orgethelpfromyothers・Someusefulconstantsandresultsare:h=6.63x10-^^me=9.11xl0-31^=1.60xW,9Cc=2.9989xl08/m_,U/mol=].Q36x'2eVRH=109677.58lc/n-1=1.381x10也丿K_cm~'=1.986x10'23JHartree=29410cm'

3、[E=(atomicunit)2/广=1=1=j0*(//k(A)d“=0八1八1Sza=^aSzP=-~PdCrsin2(tzx)=-^xsin(2dx)4ac2=a2+b2+2c//?cos&2$=唁刍丄工％i(R)Q(R)=g%°=丄工龙;(R)肌(R)ciucKgrRelativeatomicmass:Fe-56C-12Na-23Cl-35.5Ec2o、「(xz)1o、，(yz)A】1111z222x，y忆A211-1RzxyBi1・11X,Ryxzb21・11y，Rxyz1.Pleasedrawthefollowingmolecularorbitals,(4points)1

4、)%〉2)龙打3)6$4)5：2.X-raydiffractionanalysisofcrystallineCm(buckminsteifulleFeneorbuckyball)showsthatthecrystalstructureat300Kisface-centeredcubic(fee)withoneC&)moleculelocatedateachlatticepointandtheunitcelledgelength—则o-n)1)Calculatethedensityofthesolid.(3points)2)Ifthesolidisformedbycubicclosed

5、-packing(ccp)of12j)entauotis“spherical”C6()molecules,calculatethe“sphericalradiusof20hexagonsCoo.(3points)3)IfsolidCgoisdopedwithK(potassium)atoms,anewsolidisobtained,whichhasasuperconductingtransitiontemperatureof19.3K.Thepotassiumatomsinthenewsolidoccupyalloftheoctahedralandtetrahedralholesin

6、theunitcell.Whatistheempiricalformulaofthenewsolid?(2points)1.TheBalmerseriesforHatomtransitionsisgivenby:气2=RhT2T"=3,4,5,…<2n丿1)Whatisthelongestwavelengthtransitioninnm?(3points)2)Whatistheperiodofthe(minimumenergy)ionizingradiationinunitsoffs(lfs=10I5s)?(4points)3)Whatisthespeedofanejectedele

7、ctronfollowingabsorptionofa351nmphoton?(3points)4)WhatisthedeBrogilewavelengthoftheejectedelectroninnm(nanometer)units?(2points)2.Pleasediscusstheinterpretationof妙*(x)p(x)andp*(x)妙(x)"vwithbriefexplanations.(4points)3.Aconjugatedm