1. Thermal Hydrogen Scattering. The range of the interaction between two hydrogen atoms is about 4 Å. For a gas in thermal equilibrium, find the temperature below which H-H scattering is essentially S-wave.
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- The first five energy levels of the hydrogen atom are at −13.6 eV, −3.4 eV, −1.51 eV, −0.85 eV, and −0.85 eV. The absorption spectrum of a hydrogen plasma is a continuous spectrum with dark lines corresponding to all the possible transitions between these five levels. Sketch the spectrum you would expect to see at wavelengths from 400 nm to 700 nm. You do not need to use colour in your sketch, but you should provide an x-axis with tickmarks and labels in nm, label the approximate red, green and blue regions, and label each dark line with its wavelength. Show your calculations of the wavelengths. (Hint: you should show three dark lines.)Chapter 39, Problem 044 A hydrogen atom in a state having a binding energy (the energy required to remove an electron) of -1.51 eV makes a transition to a state with an excitation energy (the difference between the energy of the state and that of the ground state) of 10.200 eV. (a) What is the energy of the photon emitted as a result of the transition? What are the (b) higher quantum number and (c) lower quantum number of the transition producing this emission? Use -13.60 eV as the binding energy of an electron in the ground state. (a) Number Units (b) Number Units (c) Number UnitsB4. A bone sample has a density p = 1.2x10³ kg/m³, a molar mass m = 217 g/mol and an interaction cross section per atom o = 6.0x10-22 cm². Determine the linear attenuation coefficient µ (in cm-¹) and the half value layer (in cm). Assume there is no scattering when the radiation interacts with the bone sample. Express the values to 3 significant figures, if necessary.
- Q2.2) Answer question completely and with much detail as possible. Need to understand the concept.Hydrogen gas can be placed inside a strong magnetic field B=12T. The energy of 1s electron in hydrogen atom is 13.6 eV ( 1eV= 1.6*10 J ). a) What is a wavelength of radiation corresponding to a transition between 2p and 1s levels when magnetic field is zero? b) What is a magnetic moment of the atom with its electron initially in s state and in p state? c) What is the wavelength change for the transition from p- to s- if magnetic field is turned on?具 Hydrogen has a ground state energy of Eo = -13.6 eV. A helium atom (Z = 2) with only one electron will have a ground state energy of Selected answer will be automatically saved. For keyboard navigation, press up/down arrow keys to select an answer. Question 7 a E0/4. b C e Eo/2. Eo- d 25/3. 4E0/9.