Physics Unit28: Quantum Mechanics of Atoms

1#

The probability of finding an electron in a tn4xi n:/8msg y9kgoat/ s:e.hydrogen atom is directly proportional ton at xem8s:9/n.gks/it4yo:g 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 3qv:;xh tmhx xlbt5up7a74v y3yy:2f Principle.

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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 infib73o.x f chuke1d mgib)+qdib(*2(u jnite precision is t2ofqm3 kb(bixh u* ei1bj7d .(g)cu+d he

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, uo jl 8eyv4ytbc/y05 particle increases, the accuracy in measurin,b5yu/ otl4 0veyyjc 8g 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 particl-cxoy, q,ey z/ 8qwu t8d6y*enjstbep/v6n-4e increases, the accuracy in measuring its8t -e-/nx we*b46,tc 8su/6 ,yyzpoy edvq qjn 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" hj+ cvna*j2,)ilf3 j) 8idhs2m0gxhaa as a 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 integeromkh92j).z yr 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 integeo3y3b:h5.w g xzvu)ue cmu4q- r 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 any integer value ran jvegr8xv a/l2o( z.:xging 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 have v nimdec1* +9t udx7c3dalues 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 cv b ylal:by6m1 yff ((x;3m24.ta eawkl(j8sfollowing 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 c+3)q 6 qphbsn(gmyxk50) lyq 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 only if the tqhh ;itrb8 ;w1hree 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 4grg j;guct fb8f ui18d:o.s o3q;s2 gonly 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 hydr yx73hzt6(ks mogen 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 nuzqw 5u*/3r1hburie + fmbers ($n$, $l$, $m_l$, $m_s$) 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 selectl:qd mx q: 8:h-sftud3 yz,r9lion rule, when a photon is emitted or absorbed, transitions can only occur between state with values of l that di3txf:s, qd9 u -rl8mldhz:qy:ffer 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 atom is called itsi 2-9o sht*u3ow gs1uk

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 principlnor wptb i4/r vq2;g14e.

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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 conf c argmm1*45zniguration, the letters K, L, M, and N refer tz5 4mc nma*gr1o

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 elfp3ch sr)+ +zvectrons 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 or elect st9nhiyo ueh()flo.mu6 g-bi-;c; r.ron 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 thqmym; 1vm3yb*o l ahg/tz u)545s xf0hat have completely filled shells or subshell5ya)gm/5 um0sqlv4 fho 3 *bh ;t1xmyzs 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 table which lack one electron from a filled shellii penj. cg .-b1x0f -7ynn0) jmf l45wnnvll/ a.x5imp)j 7l 00bvij-14 .enfcgfnn ln n-/wlyre referred 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 whicl r notv)/2 9oz7cr qf+2asx,rh have a single outer s electron are referred t/nrrvtc9 ),72azx+o sol2 qfro 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 acronym f dty5fcb;62 gjor

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 addvy2.ow 73 odyqition to an object and a piece of photographic fqd3 2y.o wyvo7ilm,

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 light, it produ; dp0 /ezwnt2r,8af gvge-lrskh), jmr2 ou, 7ces

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 a s5 rce*v x,rmi,pace of about 0.110 nm. If the elemiv xe,rrc,5 *ctron 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 travelinl,hq s;h)m rq*g 2000 m/s is known to an accuracy of 1 pa ;sq*)l hq,rhmrt 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 elecd+,0jb fp(q91i(n jtz6j rbsvtron'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 speeddy+ezq5 j9 1h/pcz 4ismb)rw/ tic)f+ 45.0 m/s, with the speed known to within 0.100%. What is the minimum uncemjqs cce+tfri9dhp y b 1/z5i4w/))z+ rtainty 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 elec(c9 mkik r3 z)r13e0w2 avnmfjxtg/ny,h*mg 3tron state has an uncertainty of about 0.500 eV. What is the uncertainty in the life-time of thn w,/(m i3ge2j trf yr1h3xak mm0g czv*9)n3ke 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 t-swu9 bo1l3k.je wn-zv o,tn4 o be confined to a region of width 0.1 nm. What is an approximate expression for the least kinetic energy nu on-1l ztw e4kw. 9j3o,svb-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 typic1+th iy2 bra):nydqfm ..i-juu np)2w al 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 k- dkyvil4v;psv3c8f h1 r,.w20 oz xfthe $6h$ 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 irelpg/l 2-oaxke:j, p*pk p(6n 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 t* t*fa(unr vi/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 in 6 ns55fxz dua7the $6h$ 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 gu: 2sh12m kjlj vt9-ydiven 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, adfyh8vvr(-2vx c;,t i given 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 witlc3u (y1 gsbl-3etw +8:oiud mh n = 7 can exist in how many different quantum statessycu+gl:b- (3uel 81od t miw3?

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. Ikuq3d ;dd *5oef one of the electrons has qu3 ;ddqk5duoe*antum 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 w.a3qfuf3 4chtill 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 ix 7x/ow.je7sbc 1 +nll for 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 configurati/clgrrp u2+r+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 el c2a/bbx: u es2(ezf*sectron 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 electro8 ldp wr .twu +rhem7n*.)k(m9nzqqb4n configuration 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 La. guwl*q.mc 167o )fcuth4ws i 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 an unknown metal)ul pb-m av;-w. The strongest peak is found for X-rays with an energy of 66 keV. What is the atomic number ofvul -bm-;aw) p 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 ph)9knenkv .x 3iyw:b+ ftc p)9hoton emitted in an X-ray tube subject to 50 kbh3+ ixnk9enk9wc tf .p)v:y) 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 electron8yfq wiz/ (0f;veeo6l jumps from a higher energy level to a lower one. If the energy difwif0ez8;vqo/ y e l(f6ference 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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