Physics Unit28: Quantum Mechanics of Atoms

1#

The probability of finding an electron in a hydrogen atom is it+1 r4au+/na tf2mlldirectly proportionr2 itfm/u1l+n +al4at al 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 Uncertainty P*hoi4, 1 i/jwyae ak;hrinciple.

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 partf:hez( n(3n dz+(/hagzc ef/gicle cannot be specified with infinite precision iag(d echn(/ zzz:+3gn(/ffe hs 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 o37k8v yj,( -) jlsrway 2eqd-9amrjsthe position of a particle increases, the accuracy in measuring itsyj (7jo jyl 3ma,8r2-sawekr-d)vs9q 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 lzmhu45-i :fbthe velocity of a particle increases, the accuracy in measuring its poz -ih4:5fbmlusition 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 value v*m09u tjs7w12hqwh 5w tu fh(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 ( 1fif;trrbi ;hu1*aih yc 4)l/s7u ae+1 comwvalue 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 valug. rfv pupt(ao5ql7, 1kg l4a/e 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 rrau/ l+/*hcx ;tbw5u yanging 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 num u5cro049 . o pvdu6dg0ak;mq6-hmyl bber 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 ofpf+oij-,k5cf s. o c-a:ek-b7 y7ubj e 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 an allo5lc6exyh+argtx5q j:* h dx** wed 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 thekf;w qa:,u1o j 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 hydraru6fxb/ rkj7f4+b.o ogen has solutions 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#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The wave equation for hydrogen has soluti(vkkw,p q.xs :ons 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 qqapbzh9*swby r*-) :suantum 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, tranq(z:dboh/7g d sitions can only occur between state with vg(bz dohd q7/:alues of 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 6:*( s wg 7avtdlpf 6svk/,hy:kywhis1j yf2(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 exclusio )5i:g jqo lk7g0evr;dn principle.

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, q(oj15t bu 8pyL, M, and N refer typ51 tu(bo qj8o

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 occ4c hasyfrx 4,1upy 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 states are there in xs/ bj9ztog5d)5p-p (e4hiit 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 periodic table that have completely fil:cke( b ;qxh) vwj7z2vled shells or subshells hv (xe: k2w)7vzcbqj;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 whichu;lbl9l gj / c8myqg:9 mq,di- lack one electron from a filled shell are rug bj,g cilld9/-lqmq8 ; :9ymeferred 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 single outer s electro e6 6s6bykj vq rljjy2*71e-con are refery6 lrky 6jje bc17-oq*s26ejvred to 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 .mykmi:5j6. x abnk*qfor

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 gxr)57m alcm24tqb3iobject and a piece of c2maxl 5r qb 4ti)mg73photographic 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 5nw1 u d5zuh(ocoherent 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 wuf9,wnrvzo pynx-8+*b 2)dr8j p .qu to within a space of about 0.110 nm. If the elecw-*8)2z.nbu vf ux+ r wnj9o8prd,pyq tron 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 speed of an ele/ 2d8(ss5xmi q dypwv3ctron traveling 2000 m/s is known to an accuracy of 1 /5issw3xq8vyp (2 mddpart 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 eles eru3br5we-2 36ylb zctron'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 vnj,va3k6z1wcj8q ) uthe speed known to within 0.100%. What is the minimum uncertainty in the pos an wu 8,v3jqzkvc)6j1ition 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 at*(h6/yb* higztz 0wl dl2s6vbout 0.500 eV. What is the uncertainty in the life-time of thetzlzht* 6l/wi * gy6bv(20d hs 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,r3w ff7rn+ md*1 mcu+hwnbx6 width 0.1 nm. What is an approximate expression for the leb7mwn+ hxu63n cf dfm*r+1 w,rast kinetic energy it 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 nucqxyc wy 2/qti2**w)kk 0/dscbleus 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 the slnu 3(e:pv5(psg.;ssj s: bh

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 incctqdx y*a;gd9 3w*z;v; gt(m the

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 th6lf:78u i3ax)jpj+ p pfc , 08lgyzlbte

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 tygi1( *-ji ebbm0q ih1he

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 can lc3 ci4a9mf l )zt2gs5z s,y(jl 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, a3-2.t(bh/iy b joomp u 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 elec sqru4qm*z9 -itron with n = 7 can exist in how many different quantum stq* 94uirm zqs-ates?

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 1 wy1 e+kuqrtmuxd.(/electrons in orbit. If one of the electroty+x/u1d.r emu( 1 wkqns 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 d+quep tt9q3nyu4ylr9i v q*3(go2c 5 fit 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 forc-m7mrwioikmp1 uvwb4.2g 7/.+ nsxc 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 electro4 gv-6m a0ck ww7xrt+ecq30 ton configuration

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 dp gv9astoxvj 7:)c25zdvh5; electron configuration 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 electron configuration of .9 h wh 9t 8rhaqqlf(m5:cj4qm

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 w g(cg .q4un:lf3jyp5ihich 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 strongegb//4ufo , x:nmf)qw+rdd9edst peak is found for X-rays with an energy of 66 keV. What is the atomic number of the metafog9n /: )4 wr ddbf+mqxed,/ul?

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 ev-: :,3:r hfzberjzkmmitted in an X-ray tube subject to 5mhefv:z k:z,:rr3 j-b0 kV?

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 higher energy lebgb59,h * dkpwvel to a lower one. If the energy difference between the twob9 p,hdb*wg5 k 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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