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

1#

The probability of finding adj7 ;,oq sv r6y2/0 dbzjk1apun electron in a hydrogen atom is directly proportionbpsok/dra,;z2j vq61 j0yu 7 dal 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 Uncertayab jiiw)dhz5 t4h14 f2bm1l 9inty 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 position of a particle cannot be specified with infzjl:ndv. rf8 0inite precision islj:fz.v d80rn 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 n q9k* fij kdqx)gx:66a particle increases, the accuracy in measurk: xq6)f6 k*d xiqgj9ning 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 velocity of a particle increases, t;3r k)b(f x8w,je6 dhzxm ,zlthe accuracy in measuring its positmd, 8,f(xjktbxew) ; r6z3hzlion 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 ;sp( eo-vxq j ijm8pj *smkh/.8/7uxoa 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 can have any integer value ranging fr1w5q cqm0xnz( om

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 num-z8+xg- z rx jz)n:kluber can have 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 numbe 0cjpz9yyq65 m4j 6pdjr 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- g3 bk)z:e 4:oiecgcx can 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 folldxhq;dv+ +00.w k dtzeowing 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 the03 jfao / t92(vhhinth following 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 fohiqn5)e+ds g0r hydrogen has 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 if the three quantum6k vci ,ugm1y:whqquk-5:4aj 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 has solutions only if thijyau-a ,35p g/t x8ese 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 q)nxa;euu2yi t9; : j avk.qc+puantum 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 absorbed, transithg 4/: -zailflions can only occur between state with values of l 4ifg-hlalz/: 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 electr+2mvvh mly mj6q:8eg)ons 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#

问答题 ( 1.0 分) 切至整卷模式搜藏此题

State the Pauli exclusion printg,q49irsjv7q0u, hsh f 1rnl 4zv2h* ciple.

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's electron configuration, the let27u- b ks 9hj:ub.cmbdters K, L, M, and N refer to :u 9bumdsk-7. hb2bcj

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 that can occ2-t)sb oln1b ucx6s)b1l -patupy 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 quann: vpqi2 zj7l7tum numbers or 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 periodic table that have q*( qu +yi.k. sfukpt4:u/muoa9goa2 completely filled shells or subshelly uouts. q:f4qmk .(u+/uig*92ap o aks are referred to 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 ta3eigq p3+7)rxi q b-yable which lack one electron from a filled shell are refer7 3qy -erba p+iiqg)3xred 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 sidfp2u5beo;m,l1fa4 c0 w+ hf ongle outer s electron are referred to olf+,5de h1a ;b wo24f0mcupf 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 3htr;o* y7oqy acronym 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 addition to an tx+xj - (ccexhh8w (ai o(n5u3object and a piece of photographic(c-+x(i(hc u enxa owx htj853 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 illuminyx;n/ rt.. k toy/dlq0ated 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 wyvqo zpe08 )*xithin a space of about 0.110 nm. If the electron masso08xpz)*y q ev 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 travelix 5g ycnde:c-4 2mr:uang 2000 m/s is known to an accuracy of 1 parmuy4r5 a2 de :-:xncgct 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 s i cs lfr;l4r/u::(teelectron'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 1437r1d8; ) dcthsdq7 v(3ifmraj g and speed 45.0 m/s, with the speed known to within 0.100%. Wh;)cd1mi3dh v7drf8 (7a jtrq sat 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 uncertainty of about 0.500 eV.b5 vxy22ttr8d,wva*g What is the uncertainty in the life-time of the levey8dwgr5 x 2bt* ,tvav2l?

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 confinedb .vmv* xk yzl6b9txx8+xt77v to a region of width 0.1 nm. What is an approximate expression for the least kinetic energy it could have,ty. bxtx679 z v8b+ kxxvvlm7* 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 typi-n*w zysq9 h:rcal nucleus 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 in o:k,4z cl;2c2 pof a me2eegn)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 f0yqq2f7 i3l fthe $6h$ 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 the7 sh(ldhoo+ u- $6h$ 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 tqth md e987oljs5)ni+k,m0 wnhe $6h$ 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 ma gt2o *1v-yqoe a 7/yu9+zsgchny 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 given electron h/13z he75s d,ivxmph3lrn d6uas 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 n = 7 can x*1 66 x2rwim:jnbfyqexist in how many different quantumfnbi62 m :rx*16j xyqw 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 in os0xze o/px/gwp/) sg:rbit. If one of the electrons hzswsxxg 0:/) /eg/popas 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 fit into a :iq-gs ho lwy:9 :zpt-$4f$ 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 forjbqe:nm 0s(2zn ks qvo6k:6rdbef: cm(32j w * 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 con q2;q+3kyw)x,,oxi 8hkl xbea figuration $1s^22s^22p^63s^23p^2$. 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 configurat vpi)+vaa 9yhcj2n2m)ion 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 configuration of 72 6gr geurnondg96 9t$1s^22s^22p^6$. 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 j6 /a +xxcwm3t7 tbgvs.i o7f7three 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 metal. The stron6a8bj31fp,4w gaib 9bd/s s bfgest peak is found for X-rays with an energy of 66 keV. What is the atomic number of bdbw s 68psjbf34,fi /gba9a1 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 tube subject wuq2u28erv:liw* 5jjto 50 kvjq :iw2 ujwu58lr 2e*V?

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 levp q* p0qck5c8vj5l;fnx m 00qael to a lower one. If the energy difference between the two levels is 1.8 eV, what is l5vxn8c p q ;*qjqpkc50amf00the wavelength of the emitted photon?

A. $469 \; nm$

B. $649 \; nm$

C. $694 \; nm$

D. $964 \; nm$

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