Physics Unit28: Quantum Mechanics of Atoms

1#

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The probability of finding an electron in a hydrogen atom is,h i wvh48capm9awy wl.;)b 7c directly proportional to iw8av7haclib9wc hw4y . ,mp;) ts

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 Uncer: 0)xmej4d bxktainty Principle.

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3#

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The reason the position of a particle cannot be specif 2;dal8zr0mv xied with infinite precision is thz02vldxam 8;re

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 pa:yvez9 op04 igrticle increases, the accuracy in measuring its veloci0ov4g9piyze : ty 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 measuring the vo,fh mpx8k8j27y r 5u.g3kvq kelocity of a particle increases, the accuracy ikp3xv,88m yrj7 .kq2fu hgo 5kn 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" hak 85zwyh7gq s)s a value 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 integer value rangh ux1 (2eaq2,cz7aiup ing 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 havemx)4c-ewn fig 5c b5bim /g1n9 any 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 hai 7lvj,k e/)zu )t8v+bq4kxjave any integer 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 canp; 6 (o*veyneh have values 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 2h wttq-jkofq qb1 :*jj;5:z wfollowing 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 followingv2 k2o48;u(j nb :yk)w0n0mvlcpq xkf 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 numberg:s ub. 5xr9 pzgrc8geh34vmdj(8x*b s $n$, $l$, 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 +ssom47zxyh kf,kz3 ;has solutions 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 ha;-8 udz *nunm9dd iwg+s solutions only if the three quantum 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, theba.3 l4shn2m f quantum 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 selectionh5;.hmhz c8sa rule, when a photon is emitted or absorbed, transitions can only occur betw.s ;ch8h5 hzmaeen 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 neutral atom is cc) ltb )ey1y*ealled 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 princp*q4kfjul(,w ef k; ,biple.

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20#

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In terms of an atom's electron configuratiope x3f8w3f4xon, the letters K, L, M, and N refer topf x3wxe8f43o

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 electrons that can occupy the * ly x) 3dv.xr /ixct-cgy5-o6hq tef*$g$ sub shell?

A. 10

B. 14

C. 18

D. 22

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22#

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How many possible sets of qu7g5ite rx(e0 qg h+sg0) v;amwantum numbers 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 ha .vw/p fuxo7 b(c,2bhdve completely filled shells or subshells are referrexwf/hcdu.(2vo ,7 p bbd 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 electron friluk*b6i 47a 916nkz gup+zdaom a filled shell araau7pid6b+g*ni 94ku1z zk6 le referred to 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 have a sinvs1hk/ x /yz a,sb/ma.gle outer s electron are referred to hzbk vya1,//ms./sax 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 acr* mucem:q6 ))azx2hx(n5c vowonym 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 txc95uw.;jmoda7n t, addition to an object and a piece ooxut.mtd75 ;,ca j9wnf photographic 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 illuminated with a beam of coherent m*0zb d,m 70z9oqtuevn9 bd2tlight, 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 conf+q*g8r u erkfajzg; -4ined to within a space of about 0.110 nm. If the electron mass is g 8a*jkrzg+u4; -erq f$9.11 \times 10^{-31} \; kg$, 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 k+by8itu -+s26u rrhvq nown to an accuracy of 1 part in 8q vbu -26 ys++truihr$10^5$ (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 is vbcxx):ga(7lw9 f 1rx-yua0 m $2.0 \times 10^6 \; m/s$ 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 speed knoyznrw a/ +f+i4wn to within 0.100%. What is the z+y/a n+i4wfr 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 uncertainty of about 0.500 eV. What1h)g x z. zyozzef;(g, is the uncertainty in the life,zg.)ofhgze1 (;y zxz-time of the level?

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 ncc)n9t i2h g7hm. What is an approximate expression for the least kinetic energy it could gi)72h h9tcnc 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 nu2 aua ke:z )jzj9v5xm4cleus 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#

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

A hydrogen atom is in tih*wjlm lg 5)0he $6h$ 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 iwzsnxw-i5 d og 8q jy)+hv7),yn 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 theg4e1jkgyjw (5n7l.3 q j8sjwf $6h$ state. Which of the following could be an orbital quantum number?

A. 5

B. 6

C. 7

D. 8

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39#

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

A hydrogen atom is in le364 8 pxup0r)xczr2 xdx0x dthe $6h$ 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 = 7kg+sk dks /a-7. How many values can l have?

A. 6

B. 7

C. 15

D. 98

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41#

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

In a hydrogen atom, a given electron has l = 7. How many values om*w(0c /uezscan $m_l$ have?

A. 6

B. 7

C. 15

D. 98

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42#

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

In a hydrogen atom, an electron with n = 7 can exist in how many h9 /t9zymqtk-cab7 ;i8n tn5 kdifferent quantum s;7/ah tn9n-c zky 95 ikbttm8qtates?

A. 6

B. 7

C. 15

D. 98

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43#

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Consider ground-state helium holding two electronst59la-h0 *k ogify p0e in orbit. If one of the electrons a y eh5f*00li-pg9okt 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*f)-lasm yts , fit into a $4f$ sub shell?

A. 3

B. 4

C. 7

D. 14

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45#

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

The values of n and l for*l*cqx)7xerwn nbos,9j t9 f/ 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#

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

A neutral atom has electron confi6pqa)rq5 v o kx::z.qfguration $1s^22s^22p^63s^23p^2$. 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 el, nhu:enas1nqi0 zbi/ 82-o4kxbjye.ectron 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#

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

A neutral atom has an electron configuration of-qraz v 3q rbw e)-9(pzp*jeg ir/:.nn $1s^22s^22p^6$. 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 three ksg 8 )eo-n)vesm9ai;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 strongeso s,zcfa,(b,ws(* -;n x6j ur/rrsvedt peak is * sx6 (a-wjo,s (/u rdfs,nerz;rbv, cfound for X-rays with an energy of 66 keV. What is the atomic number of the metal?

A. 80

B. 81

C. 82

D. 83

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51#

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What is the shortest-w4nv*z +w9j pwqavelength X-ray photon emitted in an X-ray tube subject top+zn 9*4qjwwv 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 level to a lo tn otg3hr;h(-wer one. If the energy difference tt oh-grn(h3; 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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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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