Physics Unit28: Quantum Mechanics of Atoms

1#

The probability of finding an electron in a hydrogen atom is directly propor nqprg8(e89- jlh xfkrh )ma ;lguj, /xvg9.9vtionlehr;g9u,9n vv(9 fj)gj . 8a mqrhx/lg8-pxkal 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 Uncertain( +at1sakr ij9ty 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 wiae4j8j .xoy7mnlrt3/ th infinite precision is th8e3yxna 4j/.7 jo mtlre

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 posit 680*dx)m1eup sqrt ysion of a particle increases, the accuracy in measuring its velocitms)dexys*t 01qr6up8 y 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 the2 kxgt9r psqj,a,3 2nl velocity of a particle increases, the accuracy in measuring its posl 2j,a2 xtnp9rqs kg3,ition 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 1hjyjix7 *q+l a qy*f9)zum8fe 4l*an 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 intege:apfu be8* r,:8gjwhf r 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 8l0yn h7ses o 0cndfd:0g3. qnutz*a+number 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 number can have a tpu.:pv.ghzfb( (c )7xhjq)eny 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 ca6-6jcb b(lpd p8r0 wb u:ol;zdn 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 o;*.nyoh np hr sb0y z2+ bj9h6zsn03hsf the 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 6)u; d*asv .(ja2mkzfy7ne8pl my/k l 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 solutiobzkdug i6(6t.xf6wys3 )xe/ bzc 6r1vns 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 cvkl11uqebtlk mv u9:+)e/o ;y4nm q ;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 3:k9sbsr5fuy eh)zd: 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 nusjm3q (l 7rr:q7.fswg mbers (

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 a9g2xd)*igd hvbsorbed, transitions can only occur between state with values of l dgg*di9hvx2 )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 atom is called mg81uflz tt d:7vv09zits

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 principlemv4k kmg.t91s 3 d69kz/gahlc.

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, L, M, an :7zzqklua a/ :x58 iwmkuwb5/d N refer tomk/l8wqwk :5/zb:u u ixz75a a

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 nl)0 b;mlr 5suvw6w,smumber 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 numbers or electron statez/ph9*-iibo o8 ychk20 sifw* s are there in the

5 f

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 periodim3:m1 +pk(ry6+3rstwfxq o 3p9a osjt c table that have completely filled shells or subshells are refy6o( kt qjfx3 ms:mo 1trrpp+a3s+9w 3erred 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 3;qlhibfyq 2* u ljn0/filled shell are refer3i 2/ l0hjl bqfn;qu*yred 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 si tic(- -1eq xjxxw*:qmngle outer s electron are referred tqx xm i(*1-ct j-:ewxqo 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 a; k:cbbf8tsotk( +a2fcronym 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 object1+oz b.1vl.pahf;kms 4qf tu5 and a piece of photographitla.fzm5pku s4 h1v +qfo.1b;c 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 coherent4xl1z ml qztj )()n-6mohn2jxu ( 7yof 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 acgzmrutzaa ** 8o;p23 space of about 0.110 nm. If the elecrao8z u3a*pm;* zcgt2tron mass is

9.11 \times 10^{- 31} k g

, 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 spee91 nma/ dlhb973l ivgad of an electron traveling 2000 m/s is known to an accuracybm3ld1iv / nlaa99 gh7 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 m m

B.

5.8 m m

C.

8.7 m m

D.

1.2 c m

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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 elect39qtm7rryfg j1*gemj( ng;8mf,ej ,bv 4qsc7 ron'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 n m

B.

0.58 n m

C.

0.87 n m

D.

1.2 n m

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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, with the speed known to wit8 1tv//z zdb +:pzsixghin 0.100%. What is the minimum uncertainty in the poz/zx i8dst1p+zbv g:/sition 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 uncert 3 1;qljzfw8ufqj./d nainty of about 0.500 eV. What is the uncertainty in thf3d/wq.8 jnf uq1zl j;e 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 i/43c:lz, pe)bb v w-upaf qx/hs an approximate expression for the least kinetic energy it v4 )/q wla b/c:p- zu3pexbhf,could have, in eV?

A.

2.7 e V

B.

3.2 e V

C.

3.8 e V

D.

4.3 e V

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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 nuclelq6bwxh7* :ed4qnm )t kfp-y9us 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 M e V

B.

0.6 M e V

C.

0.8 M e V

D.

1.0 M e V

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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 t lw9rkoedj9r a:/b-x),fyj z1he

6 h

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 on1 j3d9 ytb:gthe

6 h

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 the ubo9yt:*n 8in

6 h

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 thx,5n iy4:ie5s1ag vhj e

6 h

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 many values canemb kp 2 z6 qf;ti1kdu84bnx+4 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 el*k2*fx stjlr -hk2le -1:yfb qectron 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 wiq)6m0v lk09rewato *xq q7lv5th n = 7 can exist in how many different quantum v vlkw00)qlroq 5 e96m7ta*qx 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 hcig,;r k21bso elium holding two electrons in orbit. If one of the electrons, gc okb21sri; 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

How many electrons will f.1r8bck x* iozbs-r1pit into a

4 f

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 z(q:x t h:mw:*syq (f 6llyx-afor a

4 f

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 confie.* vjvf2 ir;tguration

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{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 configurationdb5)/ h oz8+)+lb q ,r /wgwubyi iot9pdlcq2- of

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{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 el(u p1fohbs ad.y,58fx ectron configuration of

1 s^{2} 2 s^{2} 2 p^{6}

. If a neutral atom holds one additional electron, what is the ground state configuration?

A.

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}

B.

1 s^{2} 2 s^{2} 2 p^{7}

C.

1 s^{2} 2 s^{3} 2 p^{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 wh89 :kyo4w(by txwbo (wich has three electrons?

A.

1 s^{3}

B.

1 s^{1} 2 s^{2}

C.

1 s^{2} 2 s^{1}

D.

1 s^{2} 1 p^{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 stobxoo;o4-nx 3zo2m 1nra ,5og rongest peak is found for X-rox;og2 z-43 xonmoan b15,ro oays with an energy 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-kzc;*hi2 ; j/kprcz 4eray photon emitted in an X-ray tube subject to 50 kV ze 2cjz;h4r k;ck*pi/?

A.

0.025 n m

B.

0.25 n m

C.

2.5 n m

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 higherspf z:hf*/0)v(k)bj q p i ju,5mdu(ts energy level to a lower one. If the energy dip)bs /tu 50ujvqm:zf(f() jh*sdi k p,fference between the two levels is 1.8 eV, what is the wavelength of the emitted photon?

A.

469 n m

B.

649 n m

C.

694 n m

D.

964 n m

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