Physics Unit28: Quantum Mechanics of Atoms - 51fly国际课程 (51fly.win)

1#

The probability of finding f:lj0 exk. *y5q ,gdg7q)ynpw an electron in a hydrogen atom is directly proportional to its l nq, p )gg*.xqyd7jk0y5wf:e

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 Uncertainty Princi d6 jbyuc8o6a)ple.

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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 partiqc, 5cylrrm vt4g1 xsl59 b32 3pk7xtvh0ha 2zcle cannot be specified with infinite precision h b5t17233a2vt9,l h z4y5cq s kr 0vrpxmcxglis the

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 positionoyb)/rd20)ll 3 h,djrtvatw uh2 - 0zv of a particle increases, the accuracy ill tyr 0 ,azj vd230 /u2drvbht)ho)-wn measuring its velocity will

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 ve4t.jf jd/:7eo 3*me mx)ct ma8qkrhs3locity of a particle increases, the accuracy in measuring its posifq3dthokrmt m7s84a* jce emj .x):/ 3tion 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 a value ;ntx:knnbpuij n;8mi;bu 8c ,y 5+.ecof

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 can have any integer value raev6m5qd+c q/nsf k95bl+- *h3oujv c mnging 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 h7.w jk 97hthz555 3on:/qfo gxojvdsa6hlx3u ave 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The magnetic quantum number 51;r3j h*bkz*b z:dtk4lxcfa can have 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The spin quantum number can8 bu6 eoc,,p5wk 0 qsos,ws;ek 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If l = 4, which one of the following 1a/l n))kzlaw is a possible 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 follo:lqz g0zdl7eq56 u)slwing is not 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 has solutions onlyls7v fy;ma 8m0 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 if the 3y8/m q bb fkhkehz3:-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 s*h/k ron5n0xhydrogen 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 quantum numbe* cbnr b3 *32r mvjz3llhjr.h2rs ($n$, $l$, $m_l$, $m_s$) 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 gyie1x2g f(d6 a photon is emitted or absorbed, transitions can only occur between statgg1fydei x6(2 e with values of l that 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 neutral atoo+nji3y g a;:j8dh7 tj md sf**nr3tq;m 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 pro3rduy)c vf qh/i*pn)w6.kmq/n k 3s*inciple.

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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,+q oid1,h0 htd M, and N refer tdidt h01h q+o,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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What is the maximum number of elect,9yk/ufup * ctrons 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 ssdroue 4vjn)4p*1 1kor electron 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 periodmw et 0c)9ma-s0s aejy (ysd3,ic table that have completely filled shells or subshells are referred to a,adat0e-j9y y)0mc3sm e s ws(s

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 periodic9)s)ld8 hlppf/o1;ws1 /6jdyc mwdpd table which lack one electron from a filled shell are referred cd/pjd; l1dl 1p)8sww d so9)yf/6p mhto 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 ouaruetm 3l3 ,,. duxum2ter s electron are referred to ad3mu e.t,,2 3ruuxl mas

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 acronym f.v2ri:xyk lu 6or

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, one needs, in addition to an object and a y +ym8afe0m(jpiece of 08y(e jfm+ym aphotographic 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 illuminated with a beam of coherent lig-g1c5y tj, 8pfh/ ya x0fp/ko:peq.fb ,p1h myht, 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 hydrogh3qc c4m4h4xuen atom is confined to within a space of about 0.110 nm. If 4mu4hcc34hqx 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 2000 moufl,i3 9l n-q/s is known to an accuracy of 1 part iq9u loiln-, 3fn $10^5$ (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 speed -1w y3k4aju6qs3gsyg 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 speed known to8 pw( bb l*-ptfyc))ac6-ulrt within 0.100%. Whauycl-b8wrb*-)t6 tl) (pac p ft 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The energy of an electron state has an uncerq 4+yg u :8v8v,yumo a/;dstwntainty of about 0.500 eV. What is the uncertainty in the life-time of the level dy ,+quost/ u gwv;v8aym:n84?

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 confino4a*v:,tma*gs1 0ptfr ib,ue ed to a region of width 0.1 nm. What is an approximate expression for thrpm1gv4eo,,:u a* abi* ttfs0e 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The radius of a typical nucleus is abox/zu dv7 pav-(ut $5.0 \times 10^{-15} \; m$. 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 in thel 8r a p.q qqyl-;hq,/:vfwtj1 $6h$ 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 iba2d x.pjvro(vy hc (lg8f58ea)5wx 1n the $6h$ 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 theu oz0.w+eyw sh96 ls7p $6h$ 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 thj/a*, l 4eak.i/rt eite $6h$ 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 elf)- 8l(u bj0 3lfof2a/r pjkqmectron has n = 7. How many values can l 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 g/ pigak*0i r v)nr5i+biven electron 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, ant,bil*f pp, lq8cz on-yk)vy9 8y j8c7 electron with n = 7 can exist in how many different quantum s9kv-clcp,j78qyt zb)* y8 o,npl f 8yitates?

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 helium holding two electrons in orbit. If one of the el/4p:j jfck w-iectrons has quantum num:-jj4kwfp/i cbers ($n$, $l$, $m_l$, $m_s$) 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 fit into a wqojx 7z7;wh7$4f$ 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 for9vcd4mvis / meh39vz6k6iso9 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 elecbk v+7ff+t0dez0a4k1qy5a sltron 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 conf)*fiug us f * no3yafgj6u6o/+ d9lu7ohgq,u3iguration 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 configur y1iwsafp,3 (a9hfn(iation 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 Li -e mx pibq:83 b)b7gtdwhich 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 used to bombard an unknown meta8oy o9gp03pcg9 ,r 7i00xirnu ly-vh wl. The strongest peak is found for X-rays with an energy of 66 keV. What,98ur-invch7w9yx0yi o l030orpgpg is the atomic number 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 X8j31vb 5a2asnl kd(e-uv za30 xuu.r v-ray photon emitted in an X-ray tube subject to 50 kr (3a8jx n2v1e5kudu a-v zu0.b3aslvV?

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 b kex mmg+ngf 0w 9 hg k:0i,l(/.yuqur8.em(helectron jumps from a higher energy level to a lower one. If the energy difference between the tww0qmyg9fgb.n.(g xklhke+ i ,08m/:m(ureuh o 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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