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Bohr Model Solutions Library

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69 solutions

Bohr Model

Q. Part B. The image shows the wavelengths (in nanometers) of the four visible lines in the Balmer series for hydrogen. Match each line to its corresp...

Solved • Jul 2, 2020

Bohr Model

Q. Sort the following transitions from an excited state to a ground state according to the series into which they fall.Drag the appropriate transition...

Solved • Jul 2, 2020

Bohr Model

Q. During an emission, electrons move from a higher energy orbital to a lower energy orbital. Which of the following are valid transitions that produc...

Solved • Jul 2, 2020

Bohr Model

Q. The emission line used for zinc determinations in atomic emission spectroscopy is 214 nm. If there are 5.50×1010 atoms of zinc emitting light in th...

Solved • Jul 2, 2020

Bohr Model

Q. Why does helium exhibit more emission lines than hydrogen?

Solved • Jun 15, 2020

Bohr Model

Q. 1. For a hydrogen-like atom, classify these electron transitions by whether they result in the (absorption) or (emission) of light?n=1 to n=3 n=2 t...

Solved • Apr 30, 2020

Bohr Model

Q. Which transition in a hydrogen atom would absorb the photon of greatest frequency?n = 3 to n = 1n = 6 to n = 2n = 2 to n = 9n = 35 to n = 2n = 12 t...

Solved • Mar 17, 2020

Bohr Model

Q. Which transition in a hydrogen atom would emit the photon of greatest frequency?n = 35 to n = 2n= 6 to n = 2  n = 12 to n = 6n = 1 to n = 4n = 2 to...

Solved • Mar 17, 2020

Bohr Model

Q. When you look at hydrogen through a spectrometer, how many lines do you see? What happens to the spacing between the lines as they get closer to th...

Solved • Mar 12, 2020

Bohr Model

Q. Consider the following portion of the energy-level diagram for hydrogen:n = 4   –0.1361 × 10 –18  Jn = 3   –0.2420 × 10 –18  Jn = 2   –0.5445 × 10 ...

Solved • Nov 22, 2019

Bohr Model

Q. According to the Bohr model for the hydrogen atom, which of the following transitions will emit light with the longest wavelength?a. from the n = 4...

Solved • Oct 8, 2019

Bohr Model

Q. Which of the following transitions (of the electron in a hydrogen atom) result from the emission of a photon with the largest energy?A) n = 2 to n ...

Solved • Sep 12, 2019

Bohr Model

Q. For this question consider the figure that shows an energy level diagram for a certain atom (not hydrogen). Several transitions are shown and are l...

Solved • Aug 29, 2019

Bohr Model

Q. For this question consider the figure that shows an energy level diagram for a certain atom (not hydrogen). Several transitions are shown and are l...

Solved • Aug 29, 2019

Bohr Model

Q. Suppose you have two unlabeled flasks, and each flask contains one of these two compounds:Can you differentiate the compounds using a UV spectropho...

Solved • Jul 10, 2019

Bohr Model

Q. Consider the three electronic transitions in a hydrogen atom shown here, labeled A, B, and C.Three electromagnetic waves, all drawn on the same sca...

Solved • Nov 12, 2018

Bohr Model

Q. Does the hydrogen atom "expand" or "contract" when an electron is excited from the n = 1 state to the n = 4 state?

Solved • Nov 12, 2018

Bohr Model

Q. Place the following transitions of the hydrogen atom in order from longest to shortest wavelength of the photon emitted.

Solved • Nov 12, 2018

Bohr Model

Q. Certain elements emit light of a specific wavelength when they are burned. Historically, chemists used such emission wavelengths to determine wheth...

Solved • Nov 12, 2018

Bohr Model

Q. The hydrogen atom can absorb light of wavelength 1094 nm.Determine the initial value of n associated with this absorption.        

Solved • Nov 12, 2018

Bohr Model

Q. Is energy emitted or absorbed when the following electronic transitions occur in hydrogen?from an orbit of radius 2.12 Å to one of radius 8.46 Å,

Solved • Nov 12, 2018

Bohr Model

Q. The Lyman series of emission lines of the hydrogen atom are those for which nf = 1.Calculate the wavelengths of the first three lines in the Lyman ...

Solved • Nov 12, 2018

Bohr Model

Q. Which transition emits light with the shortest wavelength?(a) n = 5 → n = 4(b) n = 4 → n = 3(c) n = 3 → n = 2

Solved • Nov 12, 2018

Bohr Model

Q. Which electron transition produces light of the highest frequency in the hydrogen atom?a) 5p → 1sb) 4p → 1sc) 3p → 1sd) 2p → 1s

Solved • Nov 12, 2018

Bohr Model

Q. An electron in a hydrogen atom is excited with electrical energy to an excited state with n = 2. The atom then emits a photon. What is the value of...

Solved • Nov 12, 2018

Bohr Model

Q. What is an emission spectrum?

Solved • Nov 12, 2018

Bohr Model

Q. The spectra of hydrogen and of calcium are shown in the following figure. What causes the lines in these spectra? Why are the colors of the lines d...

Solved • Oct 22, 2018

Bohr Model

Q. A Bohr-model representation of the H atom is shown below with several electron transitions depicted by arrows:Rank the emissions in terms of increa...

Solved • Oct 17, 2018

Bohr Model

Q. Arrange the following H atom electron transitions in order of  decreasing wavelength of the photon absorbed or emitted:(a) n = 2 to n = ∞          ...

Solved • Oct 17, 2018

Bohr Model

Q. Arrange the following H atom electron transitions in order of  increasing frequency of the photon absorbed or emitted:(a) n = 2 to n = 4           ...

Solved • Oct 17, 2018

Bohr Model

Q. What is the wavelength (in nm) of the least energetic spectral line in the visible series of the H atom?

Solved • Oct 17, 2018

Bohr Model

Q. Using vertical lines, indicate the following transitions a. n = 3 → n = 2b. n = 4 → n = 2c. n = 2 → n = 1on an energy-level diagram for the hydroge...

Solved • Oct 15, 2018

Bohr Model

Q. Atomic emission spectra are due to electronsa. being removed from an atom.b. in an atom rising from one energy level to a higher one.c. in an atom ...

Solved • Jun 26, 2018

Bohr Model

Q. Calculate the wavelength, in nanometers, of the spectral line produced when an electron in a hydrogen atom undergoes the transition from the energy...

Solved • May 12, 2018

Bohr Model

Q. What are the wavelengths, in nanometers, of the bright lines of the hydrogen emission spectrum corresponding to the transition: n = 5 to n = 2?

Solved • Apr 6, 2018

Bohr Model

Q. Complete this sentence: Atoms emit visible and ultraviolet light a. as electrons jump from lower energy levels to higher levels. b. as the atoms co...

Solved • Apr 2, 2018

Bohr Model

Q. The bright lines of an emission spectrum are the result of _____.a. electrons being ejected from atomsb. electrons losing energy as they spiral int...

Solved • Mar 26, 2018

Bohr Model

Q. Which of the following processes is endothermic?a. An atom emits a photon.b. The electron gain process of a fluorine atom.c. An atom absorbs a phot...

Solved • Mar 16, 2018

Bohr Model

Q. Which electron transition produces light of the highest frequency in the hydrogen atom?a. 2p → 1sb. 4p → 1sc. 3p → 1sd. 5p → 1s

Solved • Mar 15, 2018

Bohr Model

Q. The energies, E, for the first few states of an unknown element are shown here in arbitrary units.

Solved • Mar 8, 2018

Bohr Model

Q. Which of the following electron transitions requires the smallest energy to be absorbed by the hydrogen atom?A. from n = 1 to n = 2B. from n = 2 to...

Solved • Aug 17, 2017

Bohr Model

Q. According to the Bohr model for the hydrogen atom, which of the following transitions will emit light with the longest wavelength?a. from the n = 4...

Solved • Jun 16, 2017

Bohr Model

Q. Which of the following statements is (are) TRUE?I. An excited atom can return to its ground state by absorbing electromagnetic radiation.II. The en...

Solved • May 25, 2017

Bohr Model

Q. Which transition between energy levels in a hydrogen atom corresponds to the shortest wavelength of light?1. 5 → 62. 2 → 53. 2 → 34. 3 → 55. 3 → 46...

Solved • Oct 18, 2016

Bohr Model

Q. Which of the following transitions represents the emission of a photon with the largest energy?A) n = 1 to n = 4B) n = 2 to n = 5C) n = 3 to n = 1D...

Solved • Sep 14, 2016

Bohr Model

Q. The lines in an atomic absorption spectrum are due to1. the presence of isotopes.2. movement of electrons from higher energy states to lower energy...

Solved • Aug 16, 2016

Bohr Model

Q. Consider the process of 2 H(g) → H2(g) where ΔH = −436 kJ/molDetermine if the sentence below is true or false.Shining light on hydrogen atoms could...

Solved • Aug 8, 2016

Bohr Model

Q. Which of the following emission lines corresponds to part of the Balmer series of lines in the spectrum of a hydrogen atom?A) n2 → n1B) n4 → n2C) n...

Solved • Aug 1, 2016

Bohr Model

Q. One of the emission lines of the hydrogen atom has a wavelength of 93.8 nm. (a) In what region of the electromagnetic spectrum is this emission found?

Solved • Jul 15, 2016

Bohr Model

Q. Indicate whether energy is emitted or absorbed when the following electronic transitions occur in hydrogen: (a) from n = 2 to n = 6

Solved • Jul 15, 2016

Bohr Model

Q. Is energy emitted or absorbed when the following electronic transitions occur in hydrogen: (a) from n = 4 to n = 2

Solved • Jul 15, 2016

Bohr Model

Q. Which of the following transitions represent  absorption of a photon with the  highest frequency? n = 3 to n = 1n = 2 to n = 4n = 1 to n = 2n = 6 t...

Solved • May 26, 2016

Bohr Model

Q. Which of the following transitions (in a hydrogen atom) represent  emission of the smallest or shortest wavelength? n = 4 to n = 2n = 3 to n=  4n =...

Solved • May 26, 2016

Bohr Model

Q. Which emission line in the hydrogen spectrum occurs at the highest frequency?a) n = 3 → n = 1b) n = 4 → n = 2c) n = 7 → n = 5d) n = 10 → n = 8

Solved • Apr 26, 2016

Bohr Model

Q. Which electronic transition in atomic hydrogen corresponds to the emission of visible light?a) n = 5 → n = 2b) n = 1 → n = 2c) n = 3 → n = 4d) n = ...

Solved • Apr 22, 2016

Bohr Model

Q. Atoms emit visible, IR, and UV light _____________ a) as electrons jump from lower energy levels to higher levels.b) as electrons drop from higher ...

Solved • Mar 22, 2016

Bohr Model

Q. According to the Bohr atomic theory, when an electron moves from one energy level to another further from the nucleusa) energy has been absorbedb) ...

Solved • Mar 22, 2016

Bohr Model

Q. Which of the following statements is or are true?1. An excited atom can return to a lower energy level by absorbing light energy.2. An atom can be ...

Solved • Mar 22, 2016

Bohr Model

Q. The lines in the emission spectrum of hydrogen result from ___________________ .A) electrons given off by hydrogen as it coolsB) decomposing hydrog...

Solved • Mar 15, 2016

Bohr Model

Q. The lines in the emission spectrum of hydrogen result from __________. A) electrons given off by hydrogen as it coolsB) decomposing hydrogen atomsC...

Solved • Mar 15, 2016

Bohr Model

Q. Which energy gap in the Bohr Model would be associated with the longest wavelength?(A) from n = 2 to n = 1(B) from n = 6 to n = 5(C) from n= 10 to ...

Solved • Mar 11, 2016

Bohr Model

Q. For a hydrogen atom, which case will result in an absorption spectrum with the highest frequency?a.  an electron transition from n = 1 → n = 2b.  a...

Solved • Mar 4, 2016

Bohr Model

Q. Which of the following statements is/are true?a. An emission spectrum is formed when a beam of white light passes through a sample of gasb. An emis...

Solved • Feb 13, 2016

Bohr Model

Q. Using the figure down below, complete the following statement: When an electron undergoes Transition A, it ________ energy, and when it undergoes T...

Solved • Feb 13, 2016

Bohr Model

Q. The lines in an atomic absorption spectrum are due to1. the presence of isotopes.2. movement of electrons from higher energy states to lower energy...

Solved • Feb 13, 2016

Bohr Model

Q. Which electronic transition in the hydrogen atom results in the emission of light of the shortest wavelength?A. n = 4 to n = 3B. n = 1 to n = 2C. n...

Solved • Feb 13, 2016

Bohr Model

Q. How many unique emission lines are observed from a system with four equally spaced energy levels?a. 1b. 2c. 3d. 4e. 5

Solved • Feb 13, 2016

Bohr Model

Q. According to the quantum-mechanical model for the hydrogen atom, which electron transition would produce light with the longest wavelength?4p → 3p ...

Solved • Feb 4, 2016

Bohr Model

Q. According to the Bohr model for the hydrogen atom, the energy necessary to excite an electron from n = 1 to n = 2 is _______ the energy necessary t...

Solved • Feb 4, 2016