Physics Unit28: Quantum Mechanics of Atoms

1#

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The probability of finding an electron in a hydrogen atom78b3r 7yea+1e ucqhao is directly proportional toyeu b +17eq7aro83ac h its

A. energy.

B. momentum.

C. wave function.

D. square of the wave function.

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2#

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State Heisenberg's U1 oo: 6ry (/xr(a7ptctd 9imtgncertainty Principle.

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3#

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The reason the position of a particle cannot be specified with infinite dep/u9dr y ydgxm9 84,1r8 wmoprecision isyyg4e/ wdrpd1,d89uo mx98mr the

A. exclusion principle.

B. uncertainty principle.

C. photoelectric effect.

D. principle of relativity.

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4#

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If the accuracy in measuring the position of a particle is1.m usf3s :, u1rgbclncreases, the accuracy in measuring its velocitu umfs:sr 1s3bc.1, lgy will

A. increase.

B. decrease.

C. remain the same.

D. be uncertain.

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5#

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If the accuracy in measuring the velocity of a particle4 nc /dumxv6*u increases, the accuracy in m /vcx*m du4n6ueasuring its position will

A. increase.

B. decrease.

C. remain the same.

D. be uncertain.

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6#

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The quantity "h-bar" has a valus1zzh,rvpa (-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#

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The principal quantum number can have any integer valueav4jzlg(e4e6 ni9(z k ranging from

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

B. 0 to $+\infty$.

C. 1 to $+\infty$.

D. 1 to 100.

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8#

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The orbital quantum number can have any integer value ranging y9 iziuia;p t+ ,t)3cqfrom

A. 0 to n.

B. 0 to (n-1).

C. 1 to n.

D. 1 to (n+1).

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9#

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The magnetic quantum number can have any integer value rangin.hg q5qlu5.)( wcpuxhg from

A. -n to +n.

B. -l to +l.

C. 0 to n.

D. 0 to l.

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10#

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The spin quantum number can have l 1aofm8k06 e:-tmkyjvalues 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#

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If l = 4, which one of the following is j6k+a,a l uo9ra possible quantum number for n?

A. 0

B. 2

C. 4

D. 8

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12#

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If n = 5, which one of the following is vl;rx69nkwy6bso jbgq.w9 4. not an allowed magnetic quantum number?

A. 0

B. 2

C. 4

D. 5

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13#

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The wave equation for hydrogen has solutions qc k+w-enkz,9;h bfjfwwx jgh4m7)06only 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#

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The wave equation for hydrogen has soluy6iaikjuu 94 ze; h0ia)nbj 5/tions 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#

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The wave equation for hydrogen has solutions fgpq oh lp4a4 dat.(-;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#

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In the ground state, tha bwk.88 ndxtxx,x+wt42b3d*n5 ohfre 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#

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According to the selection rule, when a photon is emitted orc6 y3npu:nr;z1+ j n0 iiv qd:x-4tger absorbed, transitions can only occur bg cjired+;z: 4 up 6:1xnntiv0nq- yr3etween 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#

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The number of electrons in a neutral atom is called 2jt5m s3*f p-dnv8qjux .8 uatits

A. principal quantum number.

B. orbital quantum number.

C. magnetic quantum number.

D. atomic number.

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19#

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State the Pauli exclusion princu ,ir38q4ue eqiple.

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20#

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In terms of an atom's electron configuration, the letters K, L, M, and N refer t 2 l:( 0fjjlijqbbw37go3bqf 0jjll(7 bgi2w:j

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#

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What is the maximum number of electrons th )f-n: jqvclk3at can occupy the $g$ sub shell?

A. 10

B. 14

C. 18

D. 22

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22#

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How many possible sets of quantum numbers or electron states are there in thx qcs;;bo1z5b v p)md+e $5f$ sub shell?

A. 2

B. 8

C. 10

D. 14

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23#

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The elements in the periodic table that have completec/l;qk;r(szdg2* nd . ch /zamly filled shells or subshells are referr;2; /dkzqlz/( .dagr *nmc sched to as

A. noble gases.

B. halogens.

C. alkali metals.

D. transition elements.

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24#

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The elements in the periouvo *1x( lsy8b(yb hv*dic table which lack one electron from a filled shell are referred to *v*18s (lb uhxo v(ybyas

A. noble gases.

B. halogens.

C. alkali metals.

D. transition elements.

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25#

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The elements in the pl4lu u so*9rg5eriodic table which have a single outer s electron are referred to gllr54o *uus9as

A. noble gases.

B. halogens.

C. alkali metals.

D. transition elements.

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26#

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The word LASER is an achdd5nk/l : joqs;7* mkronym 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#

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In order to produce a hologram, one needs, in addition to an object and a piecl;wedtg32.rwb 05eico8mndc12 3dvne of photo;3dd b3 8wdcliw v25.0n o1c2 grneetmgraphic 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#

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When a hologram is illuminated with a beam of cohox6)zgpl ;2 o xaog),jerent 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#

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An electron inside a hydrogen atom is confined to within a spaceu4m*wi9yz0mj t1 xf ,f of about 0.110 nm. If zi0tfwj1my 9,4x mu*f 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#

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Suppose that the speed of a nlm 5kmq7az b jwpay9-d:n (bzc,i9k(x ki710n electron traveling 2000 m/s is known to an accuracy of 1 pqamczk,0l1m(i7-9ap yk7n 59wk i xjd:zb (bnart 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#

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A measurement of an elect m/ z2-xsjwl*nwo h+9gron'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#

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A baseball has mass 143 g and speed 45.0 m/s, with the speed known to within 0.1u- *c1c0)+cmw bfesjr 00%. What is the minimum uncertainty in the position of the sm+c bj)*c1re w-fu 0cbaseball?

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#

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The energy of an electron state has an uncertainty oq7 (vbve-77ekbu o:bvf about 0.500 eV. What is the uncertvbb k-o77b:7q( u evveainty 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#

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An electron is known to be confined to a region of width 0.1 nm. s.44dl+1pxlzyg.k 7:jjd y9po q z3px What is an approximate expression fo.+pd17 xg 4oy s94j d:xz3jpkyll. qzpr the 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#

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The radius of a typical nucleus ifgn 2yo3f w7t3 ,dy-dxs 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#

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A hydrogen atom is in fkeaq ,v1d-xx;i; )uws8is9xow 8 0uqthe $6h$ state. Determine the principal quantum number.

A. 0

B. 5

C. 6

D. 7

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37#

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A hydrogen atom is inkqo3hs)q -abx5h6m : v the $6h$ state. How many electrons are allowed in this state?

A. 22

B. 18

C. 14

D. 10

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38#

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A hydrogen atom is in 9mchal*um)zv 4z, 2b kthe $6h$ state. Which of the following could be an orbital quantum number?

A. 5

B. 6

C. 7

D. 8

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39#

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A hydrogen atom is in th y ine+v8x 49iwu9;pcne $6h$ 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#

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In a hydrogen atom, a given electron has n = 7. How many vcu 9.ilrs;0 tunx 7*hralues can l have?

A. 6

B. 7

C. 15

D. 98

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41#

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In a hydrogen atom, a given electron has l = 7. Hvj, z8zxt,uv/ a(f;z bow many values can $m_l$ have?

A. 6

B. 7

C. 15

D. 98

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42#

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In a hydrogen atom, an electron with n = 7 can 8nzl 7)y oew)x bo6cf*9g yhcc7,w0hvexist in how many different quantucy , *ohfl8w 0)9c)hz6cx bn7 yov7wegm states?

A. 6

B. 7

C. 15

D. 98

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43#

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Consider ground-state helium holding two electrons in p* )zhhskiq9qbh0 l7m 4ktx /vc a9.r4orbit. If one of the electronsr4m490ct.vx z )b*qhak9 sqh7 hk /pil has 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#

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How many electrons wiyz,08rg- m)lphjztvt78 mzc. ll fit into a $4f$ sub shell?

A. 3

B. 4

C. 7

D. 14

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45#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

The values of n and l for a h+*is)wo0s 7.h3 (cytafebo h$4f$ 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#

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A neutral atom has elee4j)qgwhk r ;adis9;ob c51 3ectron configuration $1s^22s^22p^63s^23p^2$. What element is this?

A. carbon

B. nitrogen

C. silicon

D. germanium

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47#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A neutral atom has an electron configuration +,z6f v.zpe- 4gf yus45qz lnsof $1s^22s^22p^63s^23p^2$. What is its atomic number?

A. 5

B. 11

C. 14

D. 20

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48#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

A neutral atom has an electron configuration of s emmri4eejd 67t3 r-*oi.zc($1s^22s^22p^6$. 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#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

What is the electron configuration for Li which has three e*:z72 1niz pnd;zkdxq lectrons?

A. $1s^3$

B. $1s^12s^2$

C. $1s^22s^1$

D. $1s^21p^1$

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50#

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High-energy photons are used to bombard and jrfr;pzd65 4 unknown metal. The strongest peak is found for X-rays with an energjzdr f4dr6; 5py of 66 keV. What is the atomic number of the metal?

A. 80

B. 81

C. 82

D. 83

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51#

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What is the shortest-wavelength X-ray photon emitted in an X8es/5 g ih:ukkkh::lg-ray tube subject to 50 kegu/gl:i: 5s:h8kk hkV?

A. $0.025 \; nm$

B. $0.25 \; nm$

C. $2.5 \; nm$

D. none of the given answers

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教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

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52#

Single-Choice ( 1.0 marks) Whole-Paper View Save Problem

In a ruby laser, an electron jumps from a higher energy levelti ua9fi)a/; l to a lower one. If the energy differelat/a;9u fii )nce between the two 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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教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

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