Physics Unit28: Quantum Mechanics of Atoms

1#

The probability of finding an electron in a hydrogen atom is directly props;y /)j-eh,axolpl3f ortional to ihyf, )3a/sp ej olxl-;ts

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 ( 1.0 分) 切至整卷模式搜藏此题

State Heisenberg's Unced+6*l -ak-,p0g omxth t od2*p:eknxtrtainty Principle.

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

本习题练习全部题目来源于题库网 (https://tiku.one)，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

3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The reason the positio(p1wcpu/cp l/n of a particle cannot be specified with infinite precisiol(pc1wup c//p n is the

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 ( 1.0 分) 切至整卷模式搜藏此题

If the accuracy in measuring7 6qct8bgvoz3 the position of a particle increases, the accuracy in measuring its veloc8 bv3co6 qztg7ity will

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 ( 1.0 分) 切至整卷模式搜藏此题

If the accuracy in measuring the velocity of a particle increases, th 1l1(q+al5-us ulyk)tjp ;omf p;teu-e accuracy in measuu o1ul- ttel1+a;s 5;lf-(mpp)jyqk u ring its position will

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 ( 1.0 分) 切至整卷模式搜藏此题

The quantity "h-bar" has a v+ xtd)6pq2+uusb5 1 ykg ab0fyalue 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. $8.988 \times 10^{9} \; J \cdot s$.

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 ( 1.0 分) 切至整卷模式搜藏此题

The principal quantum number b(a m ;va ;smatd8+q)rcan have any integer value ranging from

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 ( 1.0 分) 切至整卷模式搜藏此题

The orbital quantum number can have any integer value ranging from9guydtg:y /a7i4 9jdu

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 ( 1.0 分) 切至整卷模式搜藏此题

The magnetic quantum number can have any ink 21ru6occsullwuhx 1q155l4 teger value ranging from

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

标记此题

10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The spin quantum numzlcvm5.x3(en0hmro( 2:(+a3y r edx8xdeq ftber 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. $-\frac{1}{2} , +\frac{1}{2}$.

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 ( 1.0 分) 切至整卷模式搜藏此题

If l = 4, which one of the followit23tvdistbk 7c*j )ne u62ie;ng is a possible quantum number for n?

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

标记此题

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 allowed magnetic quant/a8k/0lmx5jbipxi1 ,:wjhbk um number?

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 ( 1.0 分) 切至整卷模式搜藏此题

The wave equation for hydrogen has solutions only tjl 016ix6a wi (ds+ldif 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.

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 ( 1.0 分) 切至整卷模式搜藏此题

The wave equation for hydrogen has solutions only if the three quan ,oxjd*8 ;w7mxuxf lm:tum 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.

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

15#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The wave equation for hydrogen has so,vmm,ut (cl7llutions 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.

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 ( 1.0 分) 切至整卷模式搜藏此题

In the ground state, the quantu(x v0 nxjv /fx-6 +3 pk t.xb-xcvkjvct3:cyy/m 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.

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 ( 1.0 分) 切至整卷模式搜藏此题

According to the selection rule, when a photoek;b)w4t i(z, tb d*qon is emitted or absorbed, transitions can only occur between state with dtz*,qb w)ieb ko;4(tvalues of l that differ by

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 ( 1.0 分) 切至整卷模式搜藏此题

The number of electrons in a neutral sgul 6xoif8:gvd9: nv9o;q /b 4nfr .uatom is called its

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

本习题练习全部题目来源于题库网 (https://tiku.one)，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 ( 1.0 分) 切至整卷模式搜藏此题

State the Pauli exclusion princi1:d- 5plwybnyple.

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

本习题练习全部题目来源于题库网 (https://tiku.one)，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

20#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In terms of an atom'o821(hxsw7 mq ndwby9s electron configuration, the letters K, L, M, and N refer to7h2n w8(mxb1o sqw9 dy

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

本习题练习全部题目来源于题库网 (https://tiku.one)，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

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 occug(+cn mmb0 b8z p3jd6zbsb5 c8py the $g$ sub shell?

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

本习题练习全部题目来源于题库网 (https://tiku.one)，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

22#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

How many possible sets of quantum numbev6 .1z( u9stxy8b0uaqz0smd nrs or electron states are there in the $5f$ sub shell?

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

标记此题

23#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The elements in the periodic tebyo ax:+s *caom q6:6able that have completely filled shells or subshells are referred to ase sx66y+: ao:q*camob

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

24#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The elements in the periodic table which lr 35gn)4nyzg 4nvejn ;ack one electron from a filled shell are renv4rg5; g j 4)ne3znnyferred to as

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 ( 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 electron are replj91o l*bd;k(fe4ooferred to (df;1*okeol 4 9bolp jas

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

本习题练习全部题目来源于题库网 (https://tiku.one)，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

26#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The word LASER is an acronyd u1.(lzmd*v rm 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.

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 ( 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 obj;.v)svdze g bxm* zs,y5;cx i3ect and a piece o vsxe)zd .zgm;i,sv b*3x;5cy f photographic 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.

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 ( 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 p:a p ccq.9gkh zz,:op-,d1 siproduces

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 ( 1.0 分) 切至整卷模式搜藏此题

An electron inside a hydrogen atom is confined thf/fc q/) moij,rnz wmb 5m/0;o within a space of about 0.110 nm. If the e/)qw/h5j im o/fm0fz n;bcrm ,lectron 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. $1.50 \times 10^{8} \; m/s$

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 ( 1.0 分) 切至整卷模式搜藏此题

Suppose that the speed of an +wlii7km+u1 1oe (h r*w;aam selectron traveling 2000 m/s is known to an accuracy of 1 pa+ +m*m(1i ih;suw1ekow7ar lart 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. $1.2 \; cm$

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 ( 1.0 分) 切至整卷模式搜藏此题

A measurement of an electron's;g ri0oszu ofn*ms(8: 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. $1.2 \; nm$

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 ( 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 withi5opejb+. fx58p13 r 6:m idoy+voxechn 0.100%. What is the minimum uncertainty in the posite6hc5 mv+f: epd5 .opxyj3o1bi+xo8rion 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. $1.65 \times 10^{-30} \; m$

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

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 ab z5b mzxkwm3 oh)+cexk/ok-pq(*f+ +w out 0.500 eV. What is the uncertainty i* 3qkx)mw-ozkm/bzc+hpfo5e+x+ wk( n 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. $8.28 \times 10^{-11} \; s$

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 ( 1.0 分) 切至整卷模式搜藏此题

An electron is known to be confined qbqy+o(ov q((k chyb.c2oz0m r(taos) f1u-7to a region of width 0.1 nm. What is an approximate expression for the least k m 2. ycoh vbo0qrk-yq )7+1fc( u(aqs(bzoot(inetic energy it could have, in eV?

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 ( 1.0 分) 切至整卷模式搜藏此题

The radius of a typical nucleus is ast 4).ei.krx cbout $5.0 \times 10^{-15} \; m$. 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. $1.0 \; MeV$

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

本习题练习全部题目来源于题库网 (https://tiku.one)，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

36#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A hydrogen atom is inl4jfc7y /zplq a6hj 1: the $6h$ state. Determine the principal quantum number.

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

标记此题

37#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A hydrogen atom is in t/f; ;r71dcg3w4d krj /fjhucvhe $6h$ state. How many electrons are allowed in this state?

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 ( 1.0 分) 切至整卷模式搜藏此题

A hydrogen atom is in the yfov; e1nlsqpb,5;w8 $6h$ state. Which of the following could be an orbital quantum number?

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 ( 1.0 分) 切至整卷模式搜藏此题

A hydrogen atom is in; s0 hwglomjryi+-/k.z-7 wnc the $6h$ state. Which one of the following is not a magnetic quantum number?

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

标记此题

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 nq l 9f/9yw xd.ei3 8py+wg:lll have?

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 ( 1.0 分) 切至整卷模式搜藏此题

In a hydrogen atom, a given electron has l = 7. How many values can(o)isvuv +1lmpe( 5yg $m_l$ have?

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 ( 1.0 分) 切至整卷模式搜藏此题

In a hydrogen atom, an electron with n = 7 can exist fb 4 bpme, zy:8:uoiyvy/q,n.in how many different quantum stateo m /zpvbf4 qu:.:b,y8,eyniy s?

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 ( 1.0 分) 切至整卷模式搜藏此题

Consider ground-state helium holding two elex , cp8pu6c-k3jbr pss9:qhf 0ctrons in orbit. If one of the electronsp0cp fur3ss-6 bxhk,qc9: pj8 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

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

本习题练习全部题目来源于题库网 (https://tiku.one)，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

44#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

How many electrons will fit yj qh ,q)r(bq/;n12sbk .y xbminto a $4f$ sub shell?

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 ( 1.0 分) 切至整卷模式搜藏此题

The values of n and l forg ms u7cdsp +.:-n-ob,rouxrh3khe/ ,9h s3yh 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.

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

46#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A neutral atom has elech;e3..1v hhlpq 52f ji-ihvkpl:o e1etron configuration $1s^22s^22p^63s^23p^2$. What element is this?

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 ( 1.0 分) 切至整卷模式搜藏此题

A neutral atom has an l u rxgt1 ,p l*:f gi.c2rel-3v;4ynuoelectron configuration of $1s^22s^22p^63s^23p^2$. What is its atomic number?

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 ( 1.0 分) 切至整卷模式搜藏此题

A neutral atom has anbsmza9 oq:z3 5n80lv/gu2 bop electron 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

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 ( 1.0 分) 切至整卷模式搜藏此题

What is the electron confighc0+m9skg-z 5469l4cir1 rq toroa cnuration for Li which has three electrons?

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 ( 1.0 分) 切至整卷模式搜藏此题

High-energy photons a80dy i9wny; ifovaqy h2h2j6 ;re used to bombard an unknown metal. The strongest peak is found for X-rays with an energy of 66 keV. What is the atomiywa 9ndoyy68h22j0 qhi;v i;fc number of the metal?

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 ( 1.0 分) 切至整卷模式搜藏此题

What is the shortest-wavelength X-ray phkmp vve7)tm ;1oton emitted in an X-ray tube subject tokv7 1vte)mmp; 50 kV?

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 ( 1.0 分) 切至整卷模式搜藏此题

In a ruby laser, an electron jumps from a higher energy level to a lower one. Itb-0 rhn2nmyr,1g trm(z.(lqf the energy difference between the two levels-0ynl(zmb m1(hg,rrtnt. 2 q r is 1.8 eV, what is the wavelength of the emitted photon?

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

账号		自动登录	找回密码
密码			立即注册

未使用图片

本次作答已使用

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