Physics Unit28: Quantum Mechanics of Atoms

1#

The probability of finding an electron in a hydrogen atom is directly proponnx-aw(q8(g,hc 4 r flz.t -wrrtion.h wzrl((-n- ft4nw q,r8axgcal to its (1.0 分)

A. energy.

B. momentum.

C. wave function.

D. square of the wave function.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

2#

问答题搜藏此题

State Heisenberg's Uncertainty 5f 27smfl1xjp6br-r frtv +j +Principle. (1.0 分)

该题自我估分: (必填) (满分:1.0分)

绑定到本题的附件链接:
绑定到本题的上传图片: (问答题类型题目图片/附件必须插入上方文本框，否则会被移除题目绑定)

参考答案:

进入本题讨论区，参与讨论

标记此题

3#

单选题搜藏此题

The reason the position of a prh.6rg 4t gcfxa op6f)*7mmj*article cannot be specified with infinite precision 6.txgmr* 7acfp*f go6hrjm)4 is the (1.0 分)

A. exclusion principle.

B. uncertainty principle.

C. photoelectric effect.

D. principle of relativity.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

4#

单选题搜藏此题

If the accuracy in measuring the position of a particle increx.zr .+d+yym cz. iav1d;kwz6ases, the accuracy in measuring its velocity wiv ;zizkdrym6 +.z1+yxa. dc.wll (1.0 分)

A. increase.

B. decrease.

C. remain the same.

D. be uncertain.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

5#

单选题搜藏此题

If the accuracy in measuring the velocity of a particle increases, the accuracy 2a; w0 czlczp*lxz**sin meaa zc *pl0z2ls z*w;*xcsuring its position will (1.0 分)

A. increase.

B. decrease.

C. remain the same.

D. be uncertain.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

6#

单选题搜藏此题

The quantity "h-bar" has a valuu 7x7 kr1tbon yik7dvdm ;ud)7 ;w7xz(e of (1.0 分)

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. $8.988 \times 10^{9} \; J \cdot s$.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

7#

单选题搜藏此题

The principal quantum number cap(8.slmyw:6hpgt y*n n have any integer value ranging from (1.0 分)

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

B. 0 to $+\infty$.

C. 1 to $+\infty$.

D. 1 to 100.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

8#

单选题搜藏此题

The orbital quantum number cane85m6lidyw l e 7h2u.j have any integer value ranging from (1.0 分)

A. 0 to n.

B. 0 to (n-1).

C. 1 to n.

D. 1 to (n+1).

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

9#

单选题搜藏此题

The magnetic quantum number can have any integer value ranging fro srqgh0;q ov49m (1.0 分)

A. -n to +n.

B. -l to +l.

C. 0 to n.

D. 0 to l.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本Practice全部题目来源于WebAssign，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
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

标记此题

10#

单选题搜藏此题

The spin quantum numco3b pg)ht/o-b :se n2hd6h wd94sn5rber can have values of (1.0 分)

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. $-\frac{1}{2} , +\frac{1}{2}$.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

11#

单选题搜藏此题

If l = 4, which one of the folljue7 f+x3 /9l:ym qhkdowing is a possible quantum number for n? (1.0 分)

A. 0

B. 2

C. 4

D. 8

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本Practice全部题目来源于WebAssign，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
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

标记此题

12#

单选题搜藏此题

If n = 5, which one of t+fsj x60j1 ejghe following is not an allowed magnetic quantum number? (1.0 分)

A. 0

B. 2

C. 4

D. 5

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

13#

单选题搜藏此题

The wave equation for hydrogen has solutions only if the tax vay4o ud*q*t.(k3khree quantum numbers $n$, $l$, and $m_l$ meet certain conditions. One of these conditions specifies that n (1.0 分)

A. can be any real number.

B. can be any non-negative integer.

C. can be any integer.

D. can be any positive integer.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

14#

单选题搜藏此题

The wave equation for hyui *fqbu; k glxdl3/b8py2(2 tdrogen has solutions only if the three quantum numbers $n$, $l$, and $m_l$ meet certain conditions. One of these conditions specifies that l (1.0 分)

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.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本Practice全部题目来源于WebAssign，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
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

标记此题

15#

单选题搜藏此题

The wave equation for hydrogen has solutions only if the x9 eb9lccgw hqx5p6(1 three quantum numbers $n$, $l$, and $m_l$ meet certain conditions. One of these conditions specifies that $m_l$ (1.0 分)

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.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

16#

单选题搜藏此题

In the ground state, taa 1af70appjpw7-:l5 yloe 8bhe quantum numbers ($n$, $l$, $m_l$, $m_s$) for hydrogen are, respectively, (1.0 分)

A. 1, 1, 1, 1.

B. 1, 0, 0, 0.

C. 1, 0, 0, ±1/2.

D. 1, 1, 1, ±1/2.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

17#

单选题搜藏此题

According to the selection rule, when a photon is emitted or absorbed, trtso9(,hkhh(wc w hb9; ansitions can only occur between state with values of l that h( ct whs(k99w ,bh;hodiffer by (1.0 分)

A. four units.

B. three units.

C. two units.

D. one unit.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

18#

单选题搜藏此题

The number of electronvo7y,pdu)3y3+f e5pd)vhbr xuz7 jo 0vj f3/ss in a neutral atom is called its (1.0 分)

A. principal quantum number.

B. orbital quantum number.

C. magnetic quantum number.

D. atomic number.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本Practice全部题目来源于WebAssign，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
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

标记此题

19#

问答题搜藏此题

State the Pauli exclusiiybrr1-y3y +hio iv68on principle. (1.0 分)

该题自我估分: (必填) (满分:1.0分)

绑定到本题的附件链接:
绑定到本题的上传图片: (问答题类型题目图片/附件必须插入上方文本框，否则会被移除题目绑定)

参考答案:

进入本题讨论区，参与讨论

标记此题

20#

单选题搜藏此题

In terms of an atom's electron configuration, the leddq0-s7 ua *)i3fqpms tters K, L, M, and N refer t)0 pfim-*s sad7q qud3o (1.0 分)

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.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

21#

单选题搜藏此题

What is the maximum number of electronn /pn6h.4ngk c at1h ia;6;vlzs that can occupy the $g$ sub shell? (1.0 分)

A. 10

B. 14

C. 18

D. 22

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

22#

单选题搜藏此题

How many possible setd,:sl uaq7 /vxpx4t +bs of quantum numbers or electron states are there in the $5f$ sub shell? (1.0 分)

A. 2

B. 8

C. 10

D. 14

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本Practice全部题目来源于WebAssign，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
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

标记此题

23#

单选题搜藏此题

The elements in the periodic table that have completely filled shells or subshel ca1g w,*ydxryjy5b.0 s4io,mls are referred tw,g1yjm*axoy 0r4bi ds cy ,.5o as (1.0 分)

A. noble gases.

B. halogens.

C. alkali metals.

D. transition elements.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本Practice全部题目来源于WebAssign，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
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

标记此题

24#

单选题搜藏此题

The elements in the pfxb6 l79kdh 8)jm:d y3a7gag0rhx e (oeriodic table which lack one electron from a filled shell are ra803kgmjyd oh7a lde:(x7fg)6 xb9 hreferred to as (1.0 分)

A. noble gases.

B. halogens.

C. alkali metals.

D. transition elements.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

25#

单选题搜藏此题

The elements in the perio7w o.ovkh01i 7hegxsj gmm5/5dic table which have a single outer s electron are referred toh5 5xwim 1/7okg egsv.j0moh7 as (1.0 分)

A. noble gases.

B. halogens.

C. alkali metals.

D. transition elements.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

26#

单选题搜藏此题

The word LASER is an av p0d84z:zkvnn -uu 8v x9jd1bcronym for (1.0 分)

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.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

27#

单选题搜藏此题

In order to produce a hologram, one needs, in addition to an objectmbdr 28ay s+0f and a piece of photoymbdf s+r028 agraphic film, (1.0 分)

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.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

28#

单选题搜藏此题

When a hologram is illuminated with a beam of coherent light, it producykky h7mmyj *ix58e.-e:p / dqes (1.0 分)

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

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

29#

单选题搜藏此题

An electron inside a hydrogen atom is confined to within a space of )f2 hxtu*;m viabout 0.110 ni*t vu)h;m x2fm. If the electron mass is $9.11 \times 10^{-31} \; kg$, what is the uncertainty in the electron's velocity? (1.0 分)

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. $1.50 \times 10^{8} \; m/s$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

30#

单选题搜藏此题

Suppose that the speed of an eld+z 5q8eoj92 )toullaectron traveling 2000 m/s is known to an accuracy of t5 8+z9)ldeuj loqoa2 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? (1.0 分)

A. $2.9 \; mm$

B. $5.8 \; mm$

C. $8.7 \; mm$

D. $1.2 \; cm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

31#

单选题搜藏此题

A measurement of an electron8mo9-cjys,f 9 injn/ i xpz.7u's speed is $2.0 \times 10^6 \; m/s$ and has an uncertainty of 10%. What is the minimum uncertainty in position? (1.0 分)

A. $0.29 \; nm$

B. $0.58 \; nm$

C. $0.87 \; nm$

D. $1.2 \; nm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

32#

单选题搜藏此题

A baseball has mass 143 g and speed 45.0 m/s, with the speed known to ou:ykpg,vk*z w .ys*-within 0.100%. What is the minimum uncer ,:-kkp vuyso*y w.g*ztainty in the position of the baseball? (1.0 分)

A. $1.56 \times 10^{-32} \; m$

B. $1.65 \times 10^{-32} \; m$

C. $1.56 \times 10^{-30} \; m$

D. $1.65 \times 10^{-30} \; m$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本Practice全部题目来源于WebAssign，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
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

标记此题

33#

单选题搜藏此题

The energy of an electron state has an uncertainty of about 0.500 eV. What n 8ykkp )lg:z1is tky8glz1: kpn )he uncertainty in the life-time of the level? (1.0 分)

A. $1.32 \times 10^{-15} \; s$

B. $8.28 \times 10^{-15} \; s$

C. $1.32 \times 10^{-11} \; s$

D. $8.28 \times 10^{-11} \; s$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

34#

单选题搜藏此题

An electron is known to be conf7y3f .e rpn/ocw 9xke-ined to a region of width 0.1 nm. What is an approximate expression for the least3x/n yr-.op9fe ewc7k kinetic energy it could have, in eV? (1.0 分)

A. $2.7 \; eV$

B. $3.2 \; eV$

C. $3.8 \; eV$

D. $4.3 \; eV$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

35#

单选题搜藏此题

The radius of a typical nu(tv i*ks y27 dshbvt.h0jr 3y/cleus 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). (1.0 分)

A. $0.4 \; MeV$

B. $0.6 \; MeV$

C. $0.8 \; MeV$

D. $1.0 \; MeV$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

36#

单选题搜藏此题

A hydrogen atom is in b.xu9sav+91b. ml afh the $6h$ state. Determine the principal quantum number. (1.0 分)

A. 0

B. 5

C. 6

D. 7

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本Practice全部题目来源于WebAssign，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
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

标记此题

37#

单选题搜藏此题

A hydrogen atom is in the ov63(f3k3-,d u/ d1dcxw+s rkxxhvw u $6h$ state. How many electrons are allowed in this state? (1.0 分)

A. 22

B. 18

C. 14

D. 10

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

38#

单选题搜藏此题

A hydrogen atom is iv+ da9f6r bo17sqy( oon the $6h$ state. Which of the following could be an orbital quantum number? (1.0 分)

A. 5

B. 6

C. 7

D. 8

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

39#

单选题搜藏此题

A hydrogen atom is in dhv (.5 2p2n9g,/qdcva7ufuo z7 d yitthe $6h$ state. Which one of the following is not a magnetic quantum number? (1.0 分)

A. 0

B. 2

C. 4

D. 6

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本Practice全部题目来源于WebAssign，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
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

标记此题

40#

单选题搜藏此题

In a hydrogen atom, a given electron has n = put.q 12phccyq+ t; x4.pgb3r 7. How many values can l have? (1.0 分)

A. 6

B. 7

C. 15

D. 98

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

41#

单选题搜藏此题

In a hydrogen atom, a given electron has l = 7. How many qo dc9,ft 7y mi;p1us4values can $m_l$ have? (1.0 分)

A. 6

B. 7

C. 15

D. 98

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

42#

单选题搜藏此题

In a hydrogen atom, an electron with n = +wif;qib ge 8-7 can exist in how many different quantum ;i-giw b 8fq+estates? (1.0 分)

A. 6

B. 7

C. 15

D. 98

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

43#

单选题搜藏此题

Consider ground-stat: ea2i24) owqeh2czhfe helium holding two electrons in orbit. If one of the electrons has quanh2qw 2h)z 2if c:oee4atum numbers ($n$, $l$, $m_l$, $m_s$) of 1, 0, 0, -1/2 respectively, the quantum numbers for the other electron will be (1.0 分)

A. 1, 1, 0, -1/2.

B. 1, 0, 0, +1/2.

C. 1, 1, 1, +1/2.

D. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

44#

单选题搜藏此题

How many electrons will fit into 7w/hcz4 wcv6q9xjn)v0qi c-y a $4f$ sub shell? (1.0 分)

A. 3

B. 4

C. 7

D. 14

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

45#

单选题搜藏此题

The values of n and l for a rj26: )n5qcjuoy 0j( egyfl:3fp-ipn$4f$ sub shell are (1.0 分)

A. n = 4, l = 4.

B. n = 4, l = 3.

C. n = 3, l = 3.

D. n = 4, l = 2.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本Practice全部题目来源于WebAssign，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
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

标记此题

46#

单选题搜藏此题

A neutral atom has electron configuratioin *9l+55rplbr ab(m; xc*oton $1s^22s^22p^63s^23p^2$. What element is this? (1.0 分)

A. carbon

B. nitrogen

C. silicon

D. germanium

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

47#

单选题搜藏此题

A neutral atom has an electron confic :zm v/+u;tyaguration of $1s^22s^22p^63s^23p^2$. What is its atomic number? (1.0 分)

A. 5

B. 11

C. 14

D. 20

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

48#

单选题搜藏此题

A neutral atom has an electron configuratiol(5;5leq0w h7zb 5zsi )ara wjn of $1s^22s^22p^6$. If a neutral atom holds one additional electron, what is the ground state configuration? (1.0 分)

A. $1s^22s^22p^63s^1$

B. $1s^22s^22p^7$

C. $1s^22s^32p^6$

D. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

49#

单选题搜藏此题

What is the electron configuration for Li which has three eljgi3 di5 b1y4wci5ph 77djp 5kectrons? (1.0 分)

A. $1s^3$

B. $1s^12s^2$

C. $1s^22s^1$

D. $1s^21p^1$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

50#

单选题搜藏此题

High-energy photons are used to bombard an unknown metal. The strongesnt u19r.*cebic. h(ert peak is found for X-rays with an energ ct19.c(n rer .uhbe*iy of 66 keV. What is the atomic number of the metal? (1.0 分)

A. 80

B. 81

C. 82

D. 83

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

51#

单选题搜藏此题

What is the shortest-wavelength X-ray p;b6kt/l 6:uv cmny ad4hoton emitted in an X-ray tube subject to 56at:;bl u4mvynk /d6 c0 kV? (1.0 分)

A. $0.025 \; nm$

B. $0.25 \; nm$

C. $2.5 \; nm$

D. none of the given answers

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

52#

单选题搜藏此题

In a ruby laser, an el82gydhq 4qb9mvd,) d peqs 5)aectron jumps from a higher energy level to a lower one. If the energy difference between 8q ,qg2bd m4hq d9)5sdvep) yathe two levels is 1.8 eV, what is the wavelength of the emitted photon? (1.0 分)

A. $469 \; nm$

B. $649 \; nm$

C. $694 \; nm$

D. $964 \; nm$

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

		Remember me	Forgot password?
Password			Register Now

Unused Images

Used Images in Current Log

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51	52

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51	52

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51	52