Ground state He + absorbs a photon to promote electron to excited state. This electron then relaxes to n=2 my emitting a photon with 121.61 nm wavelength. What is the original n-level of the electron?

Ground state He + absorbs a photon to promote electron to excited state. This electron then relaxes to n=2 my emitting a photon with 121.61 nm wavelength. What is the original n-level of the electron?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter29: Introduction To Quantum Physics

Section: Chapter Questions

Problem 39PE: (a) What is the momentum of a 0.0100-nm-wavelength photon that could detect details of an atom? (b)...

See similar textbooks

Related questions

Q: What is the wavelength (in nm) of EM radiation that ejects 3.56 eV electrons from calcium metal,…

A: Given data: - The kinetic energy is KE = 3.56 eV. The binding energy is BE = 2.71 eV.

Q: An electron has a kinetic energy of 5.4 eV. What is the energy of a photon whose wavelength is the…

Q: e the Bohr model of the Hydrogen atom to calculate the wavelength of the ries limit (n=∞o) for the…

Q: The wavelength of the yellow spectral emission line of sodium is 590 nm. At what kinetic energy…

Q: I Review I Constants I Periodic Ta Zinc has a work function of 4.30 eV Part A What is the longest…

Q: True or False? a) The lowest frequency used to pull electron from metal surface is not sufficient to…

A: We have to judge whether the given statements are true or not.

Q: Originally, a H-atom is in an n=8 state. The (total) energy of an electron in this state is En= eV.…

A: Given : initial state, n = 8 wavelength of emitted photon, λ = 19062 nm

Q: Calculate the velocity (in m/s) of an electron that has a wavelength of 8.76 µm. m/s (b) Through…

A: given, the wavelength of electron=λ=8.76 um mass of electron=m=9.1x10-31kg According to de Broglie…

Q: QUESTION 47 Shown is a before and after state of the Bohr Model. The first five electron orbits…

Q: A 24.7 eV electron has a 0.247 nm wavelength. If such electrons are passed through a double slit and…

A: Given that: The energy of the electron is 24.7 eV The wavelength is λ=0.247 nm The minimum angle is…

Q: 9. Given the photoelectron spectrum of scandium below, which of the following best explains why…

A: Required : Why Scandium makes a 3+ ion as opposed to 2+ ion.

Q: To excite an electron in a one-dimensional box from its first excited state to its third excited…

A: Energy required, ∆E=17eV=17×1.6×10-19J

Q: How does the answer to the previous question change if instead of a single jump from state n= 6 to…

Q: Suppose classical physicists had the idea of plotting Kmax versus f as shown. Draw a graph of what…

Q: The energy required to eject an electron from the surface of a metal is 4.8 eV. a) What is the…

Q: Which one of the following statements is incorrect concerning the X-ray spectra (see figure)? a The…

A: The X-Rays are produced to the phenomenon where an electron from a higher level energy state loses…

Q: A hydrogen atom emits a photon of wavelength 656 nm. From what energy orbit to what lower energy…

A: Required information: Wavelength of the photon, λp=656 nm=656×10-9 m The energy of the emitted…

Q: The figure shows the energy levels for an electron in a finite potential energy well. If an electron…

Q: An electron is in the n = 5 level of ionized helium. (a) Find the longest wavelength that is emitted…

A: The given data we have: Th element is helium so the value of Z will be: 2 initial level of the…

Q: Consider a Helium ion (Z = 2) with one electron. a. Derive the energy levels of the this ion. b.…

A: Note: As per the company policy only first 3 subparts aresolved below. please repost the question…

Q: The smallest observed frequency for a transition between states of an electron in a one-dimensional…

A: GivenThe smallest observed frequency for a transition between states of an electron in a…

Q: A single electron orbital lithium nucleus Z equals three in the n=4 state. the electron a photon of…

A: This question is based on Atoms topic. When an electron moves from a higher energy orbit to a lower…

Q: What is the energy of an electron with wavelength 680 nm?

A: Form the De Broglie equation, the momentum of the electron can be calculated if its wavelength is…

Q: An electron is trapped in a one-dimensional box that is 326 nm wide. Initially, it is in the n = 2…

Q: An electron and a 0.0380-kg bullet each have a velocity of magnitude 510 m/s, accurate to within…

Q: -10r a. Calculate the energy of the following signal : g(t) = 10te

A: The signal is given as : g(t)=10te-10t3 0≤t≤∞ The energy of the given signal is :…

Q: The threshold frequency vo describes the smallest light frequency capable of ejecting electrons from…

A: Use Einstein's photo electric effect equation

Concept explainers

The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways:

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Given

VIEW

Step 2: Answer

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

(a) Calculate the velocity of an electron that has a wavelength of 1.00 m. (b) Through what voltage must the electron be accelerated to have this velocity?
A physicist is watching a 15-kg orangutan at a zoo swing lazily in a tire at the end of a rope. He (the physicist) notices that each oscillation takes 3.00 s and hypothesizes that the energy is quantized. (a) What is the difference in energy in joules between allowed oscillator states? (b) What is the value of n for a state where the energy is 5.00 J? (c) Can the quantization be observed?
Atoms can be ionized by thermal collisions, such as at the high temperatures found in the solar corona. One such ion is C+5, a carbon atom with only a single electron. (a) By what factor are the energies of its hydrogen-like levels greater than those of hydrogen? (b) What is the wavelength of the first line in this ion's Paschen series? (c) What type of EM radiation is this?
(a) Calculate the number of photoelectrons per second ejected from a 1.00-mm2 area of sodium metal by 500-nm M radiation having an intensity of 1.30 kW/m2 (the intensity of sunlight above the Earth's atmosphere). (b) Given that the binding energy is 2.28 eV, what power is carried away by the electrons? (c) The electrons carry away less power than brought in by the photons. Where does the other power go? How can it be recovered?
(a) What is the maximum energy in eV of photons produced in a CRT using a 25.0-kV accelerating potential, such as a color TV? (b) What is their frequency?
(a) If one subshell of an atom has 9 electrons in it, what is the minimum value of l ? (b) What is the spectroscopic notation for this atom, if this subshell is part of the n=3 shell?
A 400-nm laser beam is projected onto a calcium electrode. The power of the laser beam is 2.00 mW and the work function of calcium is 2.31 eV. (a) How many photoelectrons per second are ejected? (b) What net power is carried away by photoelectrons?
An X-ray tube accelerates an electron with an applied voltage of 50 kV toward a metal target, (a) What is the shortest-wavelength X-ray radiation generated at the target? (b) Calculate the photon energy in eV. (c) Explain the relationship of the photon energy to the applied voltage.
The ion Li2+ makes ail atomic transition from ail n = 4 state to ail n = 2 state, (a) What is the energy of the photon emitted during the transition? (b) What is the wavelength of the photon?
A beryllium ion with a single electron (denoted Be3+) is in an excited state with radius the same as that of the ground state of hydrogen. (a) What is n for the Be3+ ion? (b) How much energy in eV is needed to ionize the ion from this excited state?
An electron in a box is in the ground state with energy 2.0 eV. (a) Find the width of the box. (b) How much energy is needed to excite the electron to its first excited state? (c) If the electron makes a transition from an excited state to the ground state with the simultaneous emission of 30.0-eV photon, find the quantum number of the excited state?
A 200-W heater emits a 1.5-m radiation. (a) What value of the energy quantum does it emit? (b) Assuming that the specific heat of a 4.0-kg body is 0.83kcaI/kg • K, how many of these photons must be absorbed by the body to increase its temperature by 2 K? (c) How long does the heating process in (b) take, assuming that all radiation emitted by the heater gets absorbed by the body?