Physics Unit28: Quantum Mechanics of Atoms

1#

The probability of finding an electron in a hydrogen atom is directly p 6jaqout-g4nq s5h;;froportional to ishj; tu 6-fa5qno4g q;ts

A. energy.

B. momentum.

C. wave function.

D. square of the wave function.

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2#

问答题 ( 1.0 分) 切至整卷模式搜藏此题

State Heisenberg's Unco)nbk b l;7-viertainty Principle.

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The reason the position of a particle cannot+xlgl9wl * /bkus:05oy6im pc/r 1 qym be specified with infinite precision is the1+ w op9 cu b5qk6lym*/i/ mxrgl:yls0

A. exclusion principle.

B. uncertainty principle.

C. photoelectric effect.

D. principle of relativity.

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the accuracy in measuring the position x7aku efs6q + 6l+a:ofof a particle increases, the accuracy in measuring its velocity will qf 67+aueloa+6xfk: s

A. increase.

B. decrease.

C. remain the same.

D. be uncertain.

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the accuracy in measuring the velocity of a particle increases, the accuracy f r 3,hy0..x,9qqfbnt4wzacainh an ac,q.0b fy,4tfq9wr.x z3 measuring its position will

A. increase.

B. decrease.

C. remain the same.

D. be uncertain.

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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The quantity "h-bar" has at0 x 2cji68/5apke6sx aifpj dc/(i g9 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The principal quantum number ko/9 mp7vl( zzcan have any integer value ranging from

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

B. 0 to $+\infty$.

C. 1 to $+\infty$.

D. 1 to 100.

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8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The orbital quantum number can have any in8qvo94j8 4 hdzy r5akeft/k ,fteger 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The magnetic quantum number can have any intee*t j8lbufce m9.d d6/ger value ranging from

A. -n to +n.

B. -l to +l.

C. 0 to n.

D. 0 to l.

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10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The spin quantum number can ha0/uiegljy ;*g rml-ko(ob f)ho-c1 p4ve 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If l = 4, which one of the following is a rux/(. xl* h wb/;no;+kqoutppossible quantum number for n?

A. 0

B. 2

C. 4

D. 8

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12#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If n = 5, which one of the following is not+iku3 w nywd1c*8)ek 9ye68pzrezi m: an allowed magnetic quantum number?

A. 0

B. 2

C. 4

D. 5

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13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The wave equation for hydrogen haycela:gp o+ )3/ xlfuar0-3lis solutions only if the three 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The wave equation for hydrogen has solutions only ig cemym-a )5e1orlr+- f 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The wave equation for hydrogen ekz8la l ;xvax:)d:/(xsqz(g has 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In the ground state, the quantuma.lbd 7sca v/y)(rzb- 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

According to the selection rule, when a photon is emitted or af: ojq2t5*b n+5herj)g u10n8 z4htbhs puoj4bsorbed, transitions can only occur between state with values of l thatjt*hh42n1r bn:ouje8u5t +sq5bzfo ph )04jg differ by

A. four units.

B. three units.

C. two units.

D. one unit.

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18#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The number of electrons in a ne e,)wds.nlu sd: :e/ziutral atom is called its

A. principal quantum number.

B. orbital quantum number.

C. magnetic quantum number.

D. atomic number.

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19#

问答题 ( 1.0 分) 切至整卷模式搜藏此题

State the Pauli exclusion principle)*a:mkgu3xc s .

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20#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In terms of an atom's electron configuration, the letters K, L, M, and 6c*ib8jzu i 0 xrh/u2aN refer to /i aucb8jhur*iz2x 60

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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the maximum number 2f bgi2z2.mxn4y (l km,x9ahw p 3hr6zof electrons that can occupy the $g$ sub shell?

A. 10

B. 14

C. 18

D. 22

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22#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

How many possible sets of quantum numbers or electrosk m wb.ip1-m9n states are there in the $5f$ sub shell?

A. 2

B. 8

C. 10

D. 14

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23#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The elements in the periodic table that have completely tg,uf y pp/cj 3gs(d27filled shells or subshells are referred tcjudy s,32ptg f g7p(/o as

A. noble gases.

B. halogens.

C. alkali metals.

D. transition elements.

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24#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The elements in the perig4 u 63rg,9.nrp 2 2f/ciec n(hokshz(5devwhodic table which lack one electron from a filled shell are rw35 se9.2ehgccrz/nn vf4id oh phr (u(2g,6keferred to as

A. noble gases.

B. halogens.

C. alkali metals.

D. transition elements.

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25#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The elements in the periodic table which have a single outer s electron are nw9 xdf cxnpo+,l,5 w-dr okkgphr+6:q jv)))referred 6ro,9d)np kg),hjw+ )frl5 p -:k+v donc wxqxto as

A. noble gases.

B. halogens.

C. alkali metals.

D. transition elements.

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26#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The word LASER is an ac3*6bez)i*jd l: enibngc r-y/ronym 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In order to produce a hologram, xc60f)2jd 8gk x gff0none needs, in addition to an object and a piece of photographi)f f0c2xkjg8dx0 6g fnc 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

When a hologram is illu;gp 1k 6wf:3rl4tepc q6e:h btminated 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An electron inside a hydrogen atom is confined to within :bv/vquf ltm,r 51g*m a space of about 0.110 mm5:rb,g fuqvtl/v *1 nm. If the electron 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Suppose that the speed of an electron traveling 2lppvb2u(qkzybsa-1(6 jcv y d0 ry)5+ 000 m/s is known to an accuracy of 1 pd+py1aq- u56 2vb(c 0)syrljz(bpyvkart 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A measurement of an electron's 1yg- 1 zat2gw-qeql )bspeed 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A baseball has mass 143 g and speed 45.0 m/s, with the+yqdz5mw lfg0 ahfm50e f0 d n+:6cy8v speed known to within 0.100%. What is the m 05d8+hmq:w l0m nvdcf ea f0+fyyzg65inimum 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The energy of an electron state has an uncertainty ofruw2.af1 2hve* isv:e about 0.500 eV. What is the uncerta 21e :*ruaihf .2vewvsinty in the life-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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An electron is known to be confined to a region of width 0.1 nm. What is an aw(4n9jy f4z2e;ag5 htezkol( pproximate expression for the least kinetic energy it could have, in ((lfejhg;k 4 9ay2 4ezzn5wtoeV?

A. $2.7 \; eV$

B. $3.2 \; eV$

C. $3.8 \; eV$

D. $4.3 \; eV$

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35#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The radius of a typical nucleu1xuoi( k.9o t-xkc a;ohal/,us 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A hydrogen atom is inntf a1 yw3 l-*iit*-vxgh1hbh,j :g*y the $6h$ state. Determine the principal quantum number.

A. 0

B. 5

C. 6

D. 7

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37#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A hydrogen atom is in the -zmj8dpd .v8u/z mbx)$6h$ state. How many electrons are allowed in this state?

A. 22

B. 18

C. 14

D. 10

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38#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A hydrogen atom is in the c 2u;ez*wua91f022 ktyp n;efqksj.p $6h$ state. Which of the following could be an orbital quantum number?

A. 5

B. 6

C. 7

D. 8

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39#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A hydrogen atom is in t42 uy s1rgi-hsbk tku;- qw(b5he $6h$ 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In a hydrogen atom, a given electron has n = 7. How many values can l(u j uhtq,+d*i(k5szvi ) /pip have?

A. 6

B. 7

C. 15

D. 98

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41#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In a hydrogen atom, a given ele4t1cxs g2i)naf+b3 ke ctron has l = 7. How many values can $m_l$ have?

A. 6

B. 7

C. 15

D. 98

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42#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In a hydrogen atom, an electron withmw+f wk k7 y;k+7**5dwpvehmclv8ta 1 n = 7 can exist in how many different quantum stak 1 e+l7t;kmyc7wh v p+w*8a5 dmvwkf*tes?

A. 6

B. 7

C. 15

D. 98

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43#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Consider ground-state bh dtx/ +.,ql6yhqeffx un7,;helium holding two electrons in orbit. If one of the electrons 6 hx bh7/,xu lt,;.qefd+qyn fhas 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

How many electrons will 5ppd : tosm5e; 8l./c:8s zk anq;fmzlfit into a $4f$ sub shell?

A. 3

B. 4

C. 7

D. 14

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45#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The values of n and l forci 4farc.4o, u 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A neutral atom has electron c wj/923xxo)zo fkj6xz.g)ro configuration $1s^22s^22p^63s^23p^2$. What element is this?

A. carbon

B. nitrogen

C. silicon

D. germanium

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47#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A neutral atom has an electron configuratqp- ln5py6z k0ion 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A neutral atom has an electron ck5gxh59n cdc7p6ea hq9/qst :onfiguration 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the electron configuration for t 3yvr64nfg7 )apsz0nf dp-/m 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

High-energy photons are usedeucjt g+)he+v 5sn1 rzj+ck -/ to bombard an unknown metal. The strongest peak is found for X-rays with an energy of 66 keV. What is the atomic numberc/nk+v+r hsjtj)15-+e ec z gu of the metal?

A. 80

B. 81

C. 82

D. 83

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51#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the shortest-wavelength X-ray photon emitteh ;mnho xzd(/:d in an X-ray tube subject to o z;:xhhnm(/d50 kV?

A. $0.025 \; nm$

B. $0.25 \; nm$

C. $2.5 \; nm$

D. none of the given answers

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52#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In a ruby laser, an electron jumps from a higher energy level to a lower one nkdjuv,cx7 /(. If the energy difference between the two levels is 1.8 eV, what is the wavelength of the emitted photon d/xc,u7njv( k?

A. $469 \; nm$

B. $649 \; nm$

C. $694 \; nm$

D. $964 \; nm$

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