Physics Unit28: Quantum Mechanics of Atoms

1#

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The probability of finding an electron in a hydrogen atom is directly proportion; 8ep* biwgl(z ,b5eueal to itsebz,bl i8*uee pgw; (5

A. energy.

B. momentum.

C. wave function.

D. square of the wave function.

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2#

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State Heisenberg's Uncertainan7( 2*pul zecty Principle.

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3#

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The reason the position of a particle cannot be spe; j7am 6uvifa-z7 s)6qd8 yjcwcified with infinite precision is t;-qa7d7w8v)j6 fy az m6cis juhe

A. exclusion principle.

B. uncertainty principle.

C. photoelectric effect.

D. principle of relativity.

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4#

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If the accuracy in measuring the posit ttdx -dtn/p,m);,g fgion of a particle increases, the accuracy in measuring itgtp;/dd- gt xft,n,)ms velocity will

A. increase.

B. decrease.

C. remain the same.

D. be uncertain.

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5#

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If the accuracy in mj3mevsa rf)uz b4bi*:* *sdv/easuring the velocity of a particle increases, the accuracy in*/a z*isv)jf4:*r3vesb d u bm measuring its position will

A. increase.

B. decrease.

C. remain the same.

D. be uncertain.

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6#

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The quantity "h-bar" has a / bx c6a;l-x z5zirp(zvalue of

A. $1.055 \times 10^{-34} \; J \cdot s$.

B. $6.626 \times 10^{-34} \; J \cdot s$.

C. $8.85 \times 10^{-12} \; J \cdot s$.

D. $8.988 \times 10^{9} \; J \cdot s$.

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7#

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The principal quantum number can have any integer6h5urj,qk b1;zfvc8 m value ranging from

A. $-\infty$ to $+\infty$.

B. 0 to $+\infty$.

C. 1 to $+\infty$.

D. 1 to 100.

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8#

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The orbital quantum number can have any integer value rangingums .tqrhp61)q* m4mq from

A. 0 to n.

B. 0 to (n-1).

C. 1 to n.

D. 1 to (n+1).

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9#

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The magnetic quantum number can have any integer value ranxz.;f j7hp cs2ging from

A. -n to +n.

B. -l to +l.

C. 0 to n.

D. 0 to l.

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10#

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The spin quantum number can have vf07em l .qs8zqu t;hm9alues of

A. $-\frac{1}{2} , -1, 0, +1, +\frac{1}{2}$.

B. $-\frac{1}{2} , -1, +1, +\frac{1}{2}$.

C. $-\frac{1}{2} , 0, +\frac{1}{2}$.

D. $-\frac{1}{2} , +\frac{1}{2}$.

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11#

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If l = 4, which one of the followingkf6pdw)*q7 c i is a possible quantum number for n?

A. 0

B. 2

C. 4

D. 8

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12#

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If n = 5, which one of the following is not as*, nik+avrfe :ch+9en allowed magnetic quantum number?

A. 0

B. 2

C. 4

D. 5

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13#

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The wave equation for hydrogen has solutions only if the threfsc,yw yc* p5qn-c 74ye quantum numbers $n$, $l$, and $m_l$ meet certain conditions. One of these conditions specifies that n

A. can be any real number.

B. can be any non-negative integer.

C. can be any integer.

D. can be any positive integer.

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14#

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The wave equation for hydrogen has sf d)okv3h ds-0bk6j h;olutions only if the three quantum numbers $n$, $l$, and $m_l$ meet certain conditions. One of these conditions specifies that l

A. is either zero or +1.

B. is either equal to or less than n-1.

C. is a positive integer.

D. has an absolute value that is either equal to or less than n.

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15#

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The wave equation for hydrogen has solutions only if the three quantfq hlmn(x a-cc:f8q 07um numbers $n$, $l$, and $m_l$ meet certain conditions. One of these conditions specifies that $m_l$

A. has an absolute value either equal to or less than l.

B. is equal to or less than n.

C. is equal to or greater than 1.

D. can be any integer.

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16#

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In the ground state, the quantum num6v6julzz q() mbers ($n$, $l$, $m_l$, $m_s$) for hydrogen are, respectively,

A. 1, 1, 1, 1.

B. 1, 0, 0, 0.

C. 1, 0, 0, ±1/2.

D. 1, 1, 1, ±1/2.

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17#

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According to the selection rule, when app9 cdu; bu3v3*iqi0e6jpcg5 photon is emitted or absorbed, transitions can 6p;i 3 9jqpu c*5cuvpbie0 dg3only occur between state with values of l that differ by

A. four units.

B. three units.

C. two units.

D. one unit.

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18#

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The number of electrons in a neu zq;6j/b0no1t6niqqchi 29s ptral atom is called its

A. principal quantum number.

B. orbital quantum number.

C. magnetic quantum number.

D. atomic number.

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19#

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State the Pauli exclusion princitme3cqcyd7mboz7 69 (ple.

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20#

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In terms of an atom's electron configurat(c w49-1iyw )rw npbnyion, the letters K, L, M, and N refer to49(n)cw 1n ryb piy-ww

A. different shells with n equal to 1, 2, 3, or 4 respectively.

B. different sub shells with l equal to 1, 2, 3, or 4 respectively.

C. the four possible levels for the magnetic quantum number.

D. the four possible quantum numbers.

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21#

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What is the maximum number of electro+s y2hgun1 pc+ns that can occupy the $g$ sub shell?

A. 10

B. 14

C. 18

D. 22

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22#

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How many possible sets of quantum juk 6*x va)4l+,quhsrnumbers or electron states are there in the $5f$ sub shell?

A. 2

B. 8

C. 10

D. 14

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23#

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The elements in the periodic table that have compl zjvz7 b* utu 9)env:4.idycs3etely filled shells or subshells az:j. 7zs)nt 9 c*vuiy43vbeu dre referred to as

A. noble gases.

B. halogens.

C. alkali metals.

D. transition elements.

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24#

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The elements in the periodic table which lack one elecw lr*1gk v m;)d,jxzv.tron from a filled shell are referred to asvm)j;w g.l k,d1zx *vr

A. noble gases.

B. halogens.

C. alkali metals.

D. transition elements.

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25#

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The elements in the periodic table w *x-4dac6) wib izmjs8hich have a single outer s electron are referred todsam)bi6z 8jw -4ic*x as

A. noble gases.

B. halogens.

C. alkali metals.

D. transition elements.

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26#

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The word LASER is an acror ld13xr(tu rux2q 2-snym for

A. Light Altered Spectra of Energy Radiated.

B. Latent Source of Enhanced Radiation.

C. Light Amplification by the Stimulated Emission of Radiation.

D. Light Absorbed States of Energetic Resonance.

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27#

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In order to produce a hologram, one needs, in addition to ageved2dk b(, ;n object and a piece of photograpkve dge (b,2;dhic film,

A. a beam of monochromatic light and a mirror.

B. a beam of monochromatic light and a lens.

C. a beam of coherent light and a lens.

D. a beam of coherent light and a mirror.

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28#

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When a hologram is il,ofb -tq+vm5 cluminated with a beam of coherent light, it produces

A. both a real and a virtual image.

B. only a real image of the object.

C. only a virtual image of the object.

D. none of the given answers

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29#

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An electron inside a hydrogen atom is confined to within a space of about 0.110 t;3i puym.gb( nm. If the electron mass 3;( mgtp.iu byis $9.11 \times 10^{-31} \; kg$, what is the uncertainty in the electron's velocity?

A. $1.05 \times 10^{6} \; m/s$

B. $1.50 \times 10^{6} \; m/s$

C. $1.05 \times 10^{8} \; m/s$

D. $1.50 \times 10^{8} \; m/s$

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30#

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Suppose that the speed of an electron traveling 2000 m/s is knowniem,,e2su 0ot to an accuracy of 1 part s,2i,me0uet o in $10^5$ (i.e., within 0.001%). What is the greatest possible accuracy within which we can determine the position of this electron?

A. $2.9 \; mm$

B. $5.8 \; mm$

C. $8.7 \; mm$

D. $1.2 \; cm$

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31#

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A measurement of an electron's speed ipmzdx 4 a;g;2fs $2.0 \times 10^6 \; m/s$ and has an uncertainty of 10%. What is the minimum uncertainty in position?

A. $0.29 \; nm$

B. $0.58 \; nm$

C. $0.87 \; nm$

D. $1.2 \; nm$

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32#

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A baseball has mass 143 g and speed 45.0 m/s, with the sf9y ,cr5 +2vrpeb.n bmsw9e+ kpeed known to within 0.100%. What is the minimum uncertaiwcv+, 2r5kbeefr .b yp+ns 99mnty in the position of the baseball?

A. $1.56 \times 10^{-32} \; m$

B. $1.65 \times 10^{-32} \; m$

C. $1.56 \times 10^{-30} \; m$

D. $1.65 \times 10^{-30} \; m$

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33#

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The energy of an electron state has an uncertainty ob+y2r,h rigj9f about 0.500 eV. What is the uncertainty in the life-time of the y,rrb i g2+j9hlevel?

A. $1.32 \times 10^{-15} \; s$

B. $8.28 \times 10^{-15} \; s$

C. $1.32 \times 10^{-11} \; s$

D. $8.28 \times 10^{-11} \; s$

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34#

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An electron is known to be confined to a regioj 1wzji- jbc:/n of width 0.1 nm. What is an approximate express -ijwcj b:zj1/ion for the least kinetic energy it could have, in eV?

A. $2.7 \; eV$

B. $3.2 \; eV$

C. $3.8 \; eV$

D. $4.3 \; eV$

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35#

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The radius of a typical nucleus;pg0/at1 bgsqb *si. 1 ibv 08vkzarp. is about $5.0 \times 10^{-15} \; m$. Assuming this to be the uncertainty in the position of a proton in the nucleus, estimate the uncertainty in the proton's energy (in eV).

A. $0.4 \; MeV$

B. $0.6 \; MeV$

C. $0.8 \; MeV$

D. $1.0 \; MeV$

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36#

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A hydrogen atom is in:x 663*v sbjuffli :zq the $6h$ state. Determine the principal quantum number.

A. 0

B. 5

C. 6

D. 7

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37#

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A hydrogen atom is in the62.qim y-kt;a8 v8kd1rwrbx r $6h$ state. How many electrons are allowed in this state?

A. 22

B. 18

C. 14

D. 10

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38#

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A hydrogen atom is in j, (yr2a8wyxr the $6h$ state. Which of the following could be an orbital quantum number?

A. 5

B. 6

C. 7

D. 8

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39#

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A hydrogen atom is in the n;) nj7 cq6fq:u iutkr,6h21xe4jrqt $6h$ state. Which one of the following is not a magnetic quantum number?

A. 0

B. 2

C. 4

D. 6

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40#

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In a hydrogen atom, a given electron has nc1pkh /kl2k x)9 9tyke = 7. How many values can l have?

A. 6

B. 7

C. 15

D. 98

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41#

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In a hydrogen atom, a given electron has l = 7. H0haf4 no(6ro gow many values can $m_l$ have?

A. 6

B. 7

C. 15

D. 98

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42#

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In a hydrogen atom, ahvis: +t p7(lsa z)e6rh ue09cn electron with n = 7 can exist in how many different quantzu+)6(7hp at:e9leisrv 0 schum states?

A. 6

B. 7

C. 15

D. 98

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43#

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Consider ground-state helium holding 7yb- j5ba k +re8s3ysbtwo electrons in orbit. If one of the electrbk 7sjb+ aes- yr5by83ons has quantum numbers ($n$, $l$, $m_l$, $m_s$) of 1, 0, 0, -1/2 respectively, the quantum numbers for the other electron will be

A. 1, 1, 0, -1/2.

B. 1, 0, 0, +1/2.

C. 1, 1, 1, +1/2.

D. none of the given answers

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44#

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How many electrons will fit in3yta s7:m .d34x6e vhjy:fenzto a $4f$ sub shell?

A. 3

B. 4

C. 7

D. 14

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45#

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The values of n and b50wfgr6 jdl7m v6wdt3 m+f-ql for a $4f$ sub shell are

A. n = 4, l = 4.

B. n = 4, l = 3.

C. n = 3, l = 3.

D. n = 4, l = 2.

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46#

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A neutral atom has electron con5-ag- m+ v2qigw5ca8 ,oiwzb u7n zh-z4nqnk,figuration $1s^22s^22p^63s^23p^2$. What element is this?

A. carbon

B. nitrogen

C. silicon

D. germanium

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47#

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A neutral atom has an elec/,paux( bmxt0zcv4x e8* c;w6:uc vwgtron configuration of $1s^22s^22p^63s^23p^2$. What is its atomic number?

A. 5

B. 11

C. 14

D. 20

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48#

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A neutral atom has an ejta1 f/bq;o4 q(f- fkdlectron configuration of $1s^22s^22p^6$. If a neutral atom holds one additional electron, what is the ground state configuration?

A. $1s^22s^22p^63s^1$

B. $1s^22s^22p^7$

C. $1s^22s^32p^6$

D. none of the given answers

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49#

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What is the electron configuratioxxq9wgj// c c2k.oqg5k)st *9 y n3drcn for Li which has three electrons?

A. $1s^3$

B. $1s^12s^2$

C. $1s^22s^1$

D. $1s^21p^1$

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50#

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High-energy photons areof m lbb7(vk *++hbmv) used to bombard an unknown metal. The strongest peak is found for X-rays with an energy of 66 keV. What is the atomic numbe*) bbo+m+7(vk vflh bmr of the metal?

A. 80

B. 81

C. 82

D. 83

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教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

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51#

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What is the shortest-wavelength X-ray photon emitted in an X-ray tubew6.p7ksu;,)tz9h z hd/u jhed subject to 5,76)ujshkht.p9h du;dez/z w0 kV?

A. $0.025 \; nm$

B. $0.25 \; nm$

C. $2.5 \; nm$

D. none of the given answers

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52#

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In a ruby laser, an electron ag0cx)yy9 0oig8cp60 l,o/qa2 hu jpejumps from a higher energy level to a lower one. If the energy difflgq,pejyh20p gc /c0oo96 uyxia 8a0)erence between the two levels is 1.8 eV, what is the wavelength of the emitted photon?

A. $469 \; nm$

B. $649 \; nm$

C. $694 \; nm$

D. $964 \; nm$

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