Physics Unit28: Quantum Mechanics of Atoms

1#

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The probability of finding an eley-izkxwgg;v*q -c3q /mlvu,4 ,7kc xmctron in a hydrogen atom is directly proportion 4 -qmcg*v-mk;k7giwx3cy /u ,qx,lvzal to its

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 Uncertainty Principley+ 1 (smjgkgels 5/z2;v9 nr7/zhyneh.

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3#

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The reason the position of a particle cannot be sp x1vzb 2ns82ul o*h;dfecified with infinite precision is th1o2n 2;sxl fb*hv8zd ue

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 position of a particle increases, the accuracy od; u8m3+lcahv rqi46in measuring it d6imcl4a r+;h 3qou8vs 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 measu) a7dt+tof x(uring the velocity of a particle increases, the accuracy in udxt o 7a(ft+)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 value of:;g xhp b s2o:4myz33cfuwd8i

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 integejxwsb: k ejxoq1/au j5g453vk4ga3. nr 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 aymi)a8krg69o0n jxj 7mt 1hz3 mx. :xrny integer value ranging 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 inte h1ikq)j;fbe rj:e 1u6ger value ranging 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 ut6k v ecb4v01x v07jsvalues 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 following is a possible quantum number e mqv 2.7jcrqhe/.y 0sav i:x1for n?

A. 0

B. 2

C. 4

D. 8

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12#

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If n = 5, which one oc:3guha7u qa +t0 1ruef the following is not an 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 three quantum numberoxu )v:19iec e l;fu1cs3 jw1is $n$, $l$, 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 solutions only if the three quantum num.dd-fklt a()xf3d ws ed6 :0plbers $n$, $l$, 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 quantum num4k(5fhj eq7otbzko a91e* 6n jbers $n$, $l$, 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 quana)yi iab 8y6atri8 )1ntum numbers ($n$, $l$, $m_l$, $m_s$) 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 a photon+4b7,.c tlpl pgkriwj p: 2;pf is emitted or absorbed, transitions can only pfkbcr;7wgp., +ltl42ipj p : 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 electrog :xc0u3/mtfg)9t q r2vpf8xfns in a neutral 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 princmfoza c96 4,ueiple.

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20#

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In terms of an atom's electron configuration, the1dfp s id eech)09z (v7z n0zdwtx8t45 letters K, L, M, and N refer t5pd z 9xh80w0ifz)71nsecv dz 4tted( o

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 ul/lxuhei(o,: 7 dy *uof electrons 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 numbers or electron states are there in tt:r;jin77a q zhe $5f$ 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 completely filled shn;e j6s *lydl2p-0wzyxw e(o*ells or subshells are referred to assw-e0 6(j*;nx pyzd2loyw* le

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 lac luwjo)t hb,t28:i5 sfk one electron from a filled shell are referred to ts 2jh owfib85t,:l)u as

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 which n gu 1iq3arp23ag4 -zfhave a single outer s electron are referred to asa3gngr4 a3if2-qp u1 z

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 acronym g8+vr:9 btu qbe0dw/+i omoa8 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 neee/(3n dmog su3n ;q7xurw.a 7eds, in addition to an object and a piece of photographic fiw(u;gqeu as7m3 n.r xdo7en3/ lm,

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 illuminated withr pty* gwbt;b(4y5 tqvs+w8 l4gj) ug7 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 hyd; rpb rya,; gscb1lv4cib8grbv;k/;;-bbav 5rogen atom is confined to within a space of about 0.110 nm. If the electpa;;igrrb,vb ;1k4b8 /g5abv; clr s-yb c ;bvron mass is $9.11 \times 10^{-31} \; kg$, 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 known to an acv v5e4vk:z za6curacy of eva z k46v:v5z1 part 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 ely9ya b9npp,h(5q)4w *wvrqoqectron's speed is $2.0 \times 10^6 \; m/s$ 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.nfu+m alri;2+a yor4 ;0 m/s, with the speed known to within 0.100%. +i u2an4;fro r;ma+l yWhat is the minimum uncertainty 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 uncv y49+dc ;e,dkj*ysoa ertainty of about 0.500 eV. What is the uncertainty in the life-time of the levo* yyk4d d+a,9ej;vsc el?

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 region of width 0.1 nm. Wharhchp aywf9o8.g 87(z t is an approximate expression for the least kr8hhz8pwagf yc9 ( 7o.inetic 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 nucleus15qx ab /z2akp 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 3ctepxu ;xt 3omf 20r2;jfe m.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 i, 1yo,vindks r356lddn the $6h$ 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 the +42disk3pi7r po j bde u.e1y9$6h$ 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 thq6me k r+nd03ul( o)o03m 9qt2yc*ozidux 0uwe $6h$ 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 n = agld9f*dxr 3q:x4f- f 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 =l9 1az,dxj-phdqga pw 4-b3*k 7. How 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, an electron with n =w n;htpxec,91 7 can exist in how many different quantum statesc ht9wep;n ,x1?

A. 6

B. 7

C. 15

D. 98

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43#

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Consider ground-state helium holding nxwv96g w+t 4qi/c.ni6br 5lg2 9x y-iv4 ptlptwo electrons in orbit. If one of the electrons has quantum numv4g62xw5vt y4 n.bn 9 r-9twi6pg/xi+cliqplbers ($n$, $l$, $m_l$, $m_s$) 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 wwt fgxi6.)p a+ill fit into 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 r6or1x/coqdx2*i sz5 l 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 eleavs,ixg/9 .ym dkfw6 g7vguvb)09 d5p ctron configuration $1s^22s^22p^63s^23p^2$. What element is this?

A. carbon

B. nitrogen

C. silicon

D. germanium

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47#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A neutral atom has an electron ck gz(2sxur nq9 eh723uonfiguration 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 and*zzcu8kxm(9ntj5u + z .(.c.mqgst q electron 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#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What is the electron configuration for Li which has threehxrx3 p db/zxco*b+4 ):;mu wr electrons?

A. $1s^3$

B. $1s^12s^2$

C. $1s^22s^1$

D. $1s^21p^1$

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50#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

High-energy photons are used to bombard an unknown metal. The strop0lsd*f s*)vwffa 8 t2ngest peak is found for X-rays with an energy of 66 keV. What is the atomic number of w a)f*l80sdp 2sfft* vthe metal?

A. 80

B. 81

C. 82

D. 83

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51#

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What is the shortest-wavelength X-ray phzi*aeq .2 h-+mg r)vbvoton emitted in an X-ray tube subject to*mav e)vqb-+hg2r.zi 50 kV?

A. $0.025 \; nm$

B. $0.25 \; nm$

C. $2.5 \; nm$

D. none of the given answers

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52#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

In a ruby laser, an electron jumps from a higher energy levelsd 48 6vm5vlnl to a lower one. If the energy difference between the two levels is 1.8 eV, what is the wavelengt4vnsdl v6 8ml5h of the emitted photon?

A. $469 \; nm$

B. $649 \; nm$

C. $694 \; nm$

D. $964 \; nm$

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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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