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Bohr Model: Absorption/emission spectra

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Wize University Chemistry Textbook > Early Atomic Theory to Quantum Theory

Bohr Model Equations

4 Activities

An Emission spectrum for a one-electron species is shown below. The spectrum shows all lines resulting from transitions to the second excited state. The line B is 165nm.


List the transitions which correspond to A, B and C
More Bohr Model Equations Questions:
Bohr model
Which of the following transitions would emit the shortest wavelength photon?
Bohr Model
A photon of light was released by a helium cation (He+) with an energy of 1.8312 x 10-18 J. If this transition ended at n = 2, from which level did this transition begin?
Bohr model: Energy
In a Hydrogen atom, for a transition to occur from n = 3 to n = 2, would energy need to be absorbed or emitted?
H atom
A hydrogen atom, initially in its lowest energy level, absorbs a photon with a wavelength of 93.1 nm. What is the final energy level?
Atomic Orbitals and Electronic Transition
An electron in H atom undergoes an electronic transition from I to II. What is the wavelength of absorbed/emitted photon?
Bohr Model
Below is the energy level diagram for the possible energy levels of a hydrogen atom (not to scale).
Answer following question about the hydrogen atom.
What is the energy change (Δ\DeltaE) corresponding to the transition labelled T?
Bohr model
Below is the energy level diagram for an electron in a hydrogen atom (not exactly to scale). Answer following question with reference to this diagram.
What is the energy change (in J) corresponding to the transition labelled D?
The Bohr Model: Energy levels
A photon of light was released by a hydrogen atom with an energy of 1.94 x 10-18 J. If this transition ended at n = 1, from which level did this transition begin?
Bohr Model: Energy levels
How much energy is required for an electron to move from n = 1 to n = 3 in Hydrogen?
The Bohr Model
A photon of light was released by a hydrogen atom with an energy of 1.94 x 10-18 J. If this transition ended at n = 1, from which level did this transition begin?
Bohr model
Which of the following transitions would emit the shortest wavelength photon?
Bohr Model: Energy
Which hydrogen emission line should you expect to have the greatest energy?
Bohr model: Energy
A sample of Hydrogen atoms is excites such that there exists a mixture of excited states from n = 1 to n = 6. the sample is then allowed to relax back to the ground state and the emission spectrum is recorded. What transition produces the lowest energy photon?
Bohr Model: Predicting Hydrogen Emission Wavelengths
Calculate the wavelength of light emitted when an electron in a hydrogen atom moves from n= 2 to n = 1.
Element: Calculating Ionization Energy of a Hydrogen-like Ion
Calculate the ionization energy of He+. Express your answer in Joules (J).