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

1#

The probability of finding an w;c0o6 on6kk telectron in a hydrogen atom is directly proportion;k o0k6wn6oct al to its

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 cy0y82new5-hm8 lalh Principle.

该题自我估分: (必填) (满分:1.0分)

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The reason the position9 r/9g6sp17 o4qtqr.rp6 m7zz1iqrayy*lbhl of a particle cannot be specified with infinite precision*6him7 rz91ol.4/1a9yt6rl7qz rrgbqs pqpy is 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 position of a parxl6ly mqe0)pk ak7y5 )ticle increases, the accuracy q5)k7x )lm6ea0ylyk pin 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 measurin qx jw6adqufo.9vwltx*0)h ++ g the velocity of a particle increases, the accuracy in measuring 0 *9 6q+dxfoa.x u t)vhqjwwl+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 a vth -5d phofm)7alue 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 can have any integer value dlv6q.6vz b x3ranging 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 intege1 pcn8;brk yl0r 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 anh0 kw8kssys f09ry1/fy 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 c+no(m3bibhpr x qw 241an 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 t )sl/o . jkgt8(aynhv3tb0ve .he following 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 following is not an alfo jpor 2m,h40 plch.6lowed 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 only if the three quantum nn:y:eiq/fr7hp t i -+xumbers $n$, $l$, 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 hydrogeh5 8oml ikxipge:*- *jn 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The wave equation for hy g*10 ss cu.b2y dl,ffwk/wt2ddrogen 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, thz;4h( ,u.c 0lgq sur2.s9fuy9gi* pscvdue5ce 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

According to the selecth6+bud fw:v0j*3uhafj y5l8gion rule, when a photon is emitted or absorbed, transitions ca:u 3v6ffa0b58jwhdh +gu*lyj n only 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The number of electrons izqk/av2xxmv5jnf2x8t76ht)ou+ q *n n 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#

问答题 ( 1.0 分) 切至整卷模式搜藏此题

State the Pauli exclusion 5c) rbsh;. zkrvc/p/n principle.

该题自我估分: (必填) (满分:1.0分)

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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'3our uj hmiw8 8q57a8as electron configuration, the letters K, L, M, and N refer to58jwo7au muir83 8aqh

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 electrons tha+lt-rlo1,t4)du*rbt(o j2r toyv g - ft 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 electron states area8gkk cp 4:+8qo1cyim 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 periodi*/iqw c+ im8yu/k ,ofd0swty8c table that have completely filled shells or subshells are referred toy 0c,imkf ouw/qwt8*i 8+/yds 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 periodic table which lack one electron7ct+,14zpki xee nab; from a filled shell are referreczt p;+k,n xe iea471bd 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 electronm 902jcq 6jd4w alg+iux0l+zr are referg+2 69qd40rc0 uxjllmijz+ aw red to 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 acrony0agz r.;b qwa.o57aljm 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, one needs, in addit*6 xr:u6i tzfr,n,sa/ik b(sp ion to an object and a piece of photograp,6 t(rpizba6:x/ ni srk,f* ushic 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 of6b j 4c0g*tmjp 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 4t:)f(jua5d, lkwz57ph rogf a space of about 0.110 nw oftz,dgp l7 (5ah5fjk:)r u4m. 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 elmvr- s:yzz9gdu8e50nd 52y*uy .hhzqectron traveling 2000 m/s is known to an accuracy s2r5g *u9.vhyd y8: e0hm5uzzq-zy d nof 1 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A measurement of an electro6p*hoix kz4h7 n'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#

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, wq, qav)dkk:2vith the speed known to within 0.100%. What is the minimum uncertainty in the position of the basebal v :,v2qaqd)kkl?

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 of about 0.500 eV. W/-m .y; y(*ep hnfk-lht; irsuhat is the uncertainty in the lnm*ht- .kih-u f;(/rsp; eyylife-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 ofe pn +vd ,mrhk/74;pxkvp a4 hbd3*2gy width 0.1 nm. What is an approximate expression for the least kinetic energy 7d3y,4*vn d vpm kag42pp+xbhh;r/ek 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 abouf sp*s15bo v*zpk y8k /1/gdvft $5.0 \times 10^{-15} \; m$. 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 the gx o9onm* idq+e :- 9k4ilhf99f0qfas$6h$ 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 theg/*/p l9 dhgke)kp ;x;9 vfv.sppc+xl $6h$ 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 in23o,64tcdqbb s8yb zn 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A hydrogen atom is in th ev7 q)oxj,kyv,sqj3x0) 3yse e $6h$ 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 gez2*zn ( wjjl4iven electron 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 gin 9uehbcm) fx yl08f))ven 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, an electron with n36 u*(o0 ptff lftu6susf,g*p : :nc q,8bubht = 7 can exist in how many different quantuufhn:of b q*fst36fg8 cu , s*l(u t60b:tupp,m states?

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 ind 4j2c k q-u d( 9figqa:83zy7aqm6lty orbit. If one of the electrons has quantum ncq(if 28tg mdq uj-z3a yqy9d:k 4la76umbers ($n$, $l$, $m_l$, $m_s$) 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 f:fbomi (v otii jpgpr0 /9h8wp ;;e29wx) ta6tit 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 for a wg qz07 -)z3fkc9hsol $4f$ 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 config*a4y2.)uf zzr45p1qi mletx curation $1s^22s^22p^63s^23p^2$. 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 ae (59ziznixqnk (j/- in electron 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A neutral atom has an electron configurati4,km1 *e. oaajbfv 9duon 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 which has thre7u x 0,5fhlfmfe 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 bombar6m4uut eoyw2s4,8 dlouihy8. d an unknown metal. The strongest peak is found for X-rays with an energy of 66 keV. What is the atomic nu4 ei6l.4thdsm ,w8uoyu 8 oy2umber 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 emitted in an X-ray tubenirh mioj4bn+;i7*z 0 subject to 50 k +z;o 0 b7mhrin*j4iniV?

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. : sbpf rpu ji:m4 u55jtvlm5/4t;s x+dt4s u6xIf the energy difference between the two levels is r4s/i5p46xss;:5 uvtb mltf5j+4x :tju udmp 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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