In quantum physics. What is the physical meaning of : 1- [P,X] 2-[H,XP]
Q: 3. A metal has a threshold wavelength of 500 nm. a. What is the binding energy of the outer electron…
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Q: For each of the following sets of quantum numbers, indicate the quantum number with an UNALLOWED…
A: The set of numbers used to describe the position and energy of the electron in atom called the…
Q: What does the number of lines on the emission spectrum tell us about the electron decays for the…
A: Introduction: The atomic emission spectrum is the pattern of lines formed when it passes through the…
Q: QUESTION 19 In 1911, when Rutherford observed alpha particles being scattered at back angles from a…
A: From Rutherford experiment on scattering of alpha particle in gold foil he observed that most of the…
Q: 3. Find whether the following transitions are allowed, and if they are, find the energy involved and…
A: The rules for allowed transition are ∆n=any value ∆l=±1∆ml=0,±1∆ms does not effect on transition…
Q: Eg Prove that: ni = /NcNy e -KT
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Q: Is an electron most strongly bound in an H, He+, or Li++ atom? Explain.
A: Among hydrogen H helium ion He+ and lithium ionLi++ . Electrons in the Lithium have strongest bond…
Q: 2. Complete the table. Work Function Work Function Frequenc Maximum KE of Metal Solids y Ejected…
A: The relation between energy and frequency is, E=hf metal solids work function (eV) work…
Q: 1 – 2i An electron is in the spin state x = A 2 Find the value of A so that the state is normalised.
A: Value of A is 1/3.
Q: 1 1 where, R = 1.097 x 107 m-1 n In the equation above, which value of n' corresponds to Lyman…
A: To choose value of n' which corresponds to Lyman series.
Q: Apr 15 9:32 PM Cansne Referring to the figure below, we see that the atomic number Z is proportional…
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Q: For each of the following sets of quantum numbers, indicate the quantum number with an UNALLOWED…
A: 1. n = 3 So l have possible values from 0 to n-1 i.e 0 to 3-1 From 0 to 2 l = 0 ,1 , 2 We have…
Q: 1. Find the Miller indices for atomic plane A shown in Fig Q1(a). Z a A b
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Q: A Deuterium nucleus is accelerated to a velocity v = 0,9c on a trajectory described by the equation…
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Q: A Deuterium nucleus is accelerated to a velocity v = 0,9c on a trajectory described by the equation…
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Q: A One-Dimensional Atom By substituting the wave function y(x) = Axe-bx into Eq. 7.2, show that a…
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Q: Which atomic picture (named after the respective physicists) gives the most complete and accurate…
A: Bohr's atomic model was proposed by Niels Bohr in 1913. It was a great model and satisfied most the…
Q: Explain the structure of the atom in general
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Q: Session 19464797 multiple choice question = R 2 A 1 B. 2 In the equation above, which value of n'…
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Q: JC-58) Quantum Numbers for Hydrogen Explain why the following sets of quantum numbers (n, 1, m¡, ms)…
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Introduction:
The commutator here is a canonical commutator. This signifies a fundamental relation between canonical conjugate quantities. The Commutator of two operators A, B is the operator C = [A, B] such that C = AB − BA. If two quantities commute, it signifies that these quantities can be measured simultaneously.
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- 2. The following simplified mechanism captures some of the features of a 3-level laser: X+ hv -→ I I → A A → X+ hv’ r= kp f(hv)[X] r = k(IC1) [I] r=kf [A] r = kị f(hv') [A] pumping intersystem crossing spontaneous emission lasing hv' + A → X+ 2hv' f(hv) = flux of photons with energy = hv f(hv') = flux of photons with energy = hv' (usually a constant value) (a constant value different from f(hv)) Note that spontaneous emission (usually fluorescence) is detrimental to efficient lasing. a) Sketch a diagram of the system and identify all the states including metastable states also known as intermediates. b) Derive the steady-state concentrations for all metastable states. c) Show that population inversion ([A]ss/[X] constant is much larger than the sum of the rate constant of spontaneous emission plus the lasing rate constant. [A]ss = steady-state concentration of A. 1) is possible if the pumping rate >>5 For each of the following transitions, indicate if the transition is allowed. If not allowed briefly explain why. (a) 5f Fr→ 3d ³Dsz (b) 1s 2s 2p 2Ds2→ 1s² 2s²2p³ S32 (c) 1s² 2s 2p ³p,→ 1s² 2s²2p¹ ³P₂ It is believed that the inter-nucleon force is repulsive at short range and is mediated by p and a mesons. If their range is about 0.5 fm then estimate the mass energy in MeV of these particles, stating your method. Estimate the mass density for the central part of a nucleus of 174Hf. State any approximations or assumptions. {Question 9 The HVL for lead atomic number 82 of attenuation 0.1 is 69.3 6.930 0.693 0.0693
- What is the binding energy for an electron in the ground state in the following hydrogen-like atoms? a) For: He++ (Z=2) E1 = ______ eV b) For: Li2+2+ (Z=3) E1= ________ eVO 1s2s-2p-3s 3p O 1s°25 2p 3p? What is the atomic number Z of the element with the electron configuration 1s²25²2p°3s²3p®3d4s²? 04 09 O21 O 18 Finish CancelFor a given value of l , what are the allowed values of ml ? What are the allowed values of ml for a given value of n ? Give an example in each case.