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

1#

The probability of finding aer5 5s8u pz.kdh fn.d,n electron in a hydrogen atom is directly proportional to it n.sdf8 hukr.,z 5d5pes

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 Princi2n5hjbl3 y 8riple.

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 cannot855sdv+x np*x( . gjungb*zxi be specified with infinite precisiobx pv5(xg x *5.gsi*nz j8ud+nn 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 autx8s0nwdx b +13n 3am particle increases, the accuracy in measuring its velocity 33s nx 1d0ub+8wtxamnwill

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 accuradt 2/ 4vvq5m7p;hl nqucy in 2 ut /v7qmnp;4 vd5hqlmeasuring 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 valuz.vaeth5etucyukok 0 m71(:- e 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 ca7 ku8t 1 ;ao-lh6wwzul/yvy;g hyq/9wn 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 integer value ranging fro0 2qhp6;ifeokc 1qgy9m

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 0zhi4 ekfnsv4 /qy5 x+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 can hav/pl* o1xf + zmr2x p4ckq4l)twe 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 possible quantum number for n?+oyj us*c9 (bq

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 /zqghahu2/j+ 3 s.unzan 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 mc wy)hv, 3mga:ex63psolutions 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 wfg*os.oj g x8 r g0ya 02(seqp+:.oyxonly 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 hydrogen has solutions only if the three quantum num/xqmvf6255 b2 wlue dbbers $n$, $l$, 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, th au:+gkf7yne1mu+9d ce 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 selection rule, when a photon is emittnyc5mm:o 2;cped or absorbed, transitions can only occur between state with values ofp:cm2omn;yc5 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 atld7a ovx,+p4som 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 p.krkjf 6jcc+jyz;e )j-9 hjm,rinciple.

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 letters K, Lgf-jwqz3/ x 7k, M, and N refer togzj-7 fw/qkx3

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 8ftz8r ,,o) qopbeqi,number of 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*td:hv1ml+shsqfm08 jxb4 3 i 3cn /qt 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 w0z:zut0/8t(r3ofm mv h - ulwpn9:l ghave completely filled shells or subshells are re0lw f zt o9rg(3mntvm u0p8-::zhul w/ferred 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 table which laceqr904w;roy8tvzv )n k one electron from a filled shell are referred er o 8;4v9wy) 0znqtrvto 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 whichf ) ch5o-x;azm have a single outer s electron are referred to hxfa c5om;)- zas

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 acgjs 6ts*v c*)tronym 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 additiowozkk7 giqen/j il 83+h +z36bn to an object and a piece of photographicjib3/ek+i zgk8 q w7z+3nl h6o 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 l*n 5 xa3xs95ywdfm 3sfight, 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 with0,9j/si,dp vr*smty xqj7o 4,nazur*in a space of about 0.110 nm. If the electron mass isz xd,/ trsrvu*ypjn q9 i *j4s7,,oam0 $9.11 \times 10^{-31} \; kg$, 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 mjvgbz )s s5/m,/s is known to an accuracy)v/, jbgzs 5ms of 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 el5z 8.mm5y:cbskx8k ha7 (8bexuf vcl.ectron'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/s4 3d,ov0im lys, with the speed known to within 0.100%. What is the minimum uncertainty in the position of th,dm 3s4yvil0o e 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 stat(4mc.ymzfl zp8 no (zpbev022 e has an uncertainty of about 0.500 eV. What is the uncertainty in cb4z(. f2nez p(opmzl 8myv02 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 ablwm ahw+r6:c 6ij3u 9pproximate expression for the least kinetic energy it could have, in eVwa i3hrw9cu m6:b+l 6j?

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 nucleuns5e5n1 6kcgl s 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 tp0 z7:t jyiuv0q*2sukhe $6h$ 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 toypnb 0 hv)d+nua/hsj136zx0he $6h$ 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 ta hp(19ik u8;hto0kwm he $6h$ 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 ik5w dss9r./p fv* gir7n the $6h$ 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 electqo 5kp;b . hcxktci.03ron 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 given electron has l = 7. How eyr y)xx) y-,g xw 1lio -ynm7ghs33q+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 exist in how many differenq dp,/b a5-g bda8goy9z /akwt6 on2d4t quantu/45/2 aka d wqd6gz9pnybood8t, ba -gm 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 electd 6yl yq kn /3l* mikf7jqhc07bgk)7u-rons in orbit. If one of the electrons has quantum kk)/*i30mqdgj 6nu- c77hl qkflb7yy 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 jem y* eh) x.,ihean()fit 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 fororl+wklcjz/ 6(q b26v 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 configuratifxg86cr /p 6h o;x3rwmii8fw ,on $1s^22s^22p^63s^23p^2$. 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 cy/rgxsi;5 siwc 4f3( honfiguration 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 configus21ootly3p x7f n: oo6ration 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 L0zgy .w; u7t5 k5cie (xnaw9fdi 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 used to bombard mwx4w 3p67dff an unknown metal. The strongest peak is found for X-rays with an em4f 76wxp fd3wnergy of 66 keV. What 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 X-ray photon emitted in an X-ray tube sub ja33pygzhlm*4dyv+l/9. jhc ject to .yj*9cjl+ma gdhv3 3zy hl/ 4p50 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 e 3knu,f(o+j olsz80wa nergy level to a lower one. If the energy difference between the two levels is 1.f0 lk w +uo8ao3zs(,jn8 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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