Subjects

Sections | |||
---|---|---|---|

Atomic Structure | 0 mins | 0 completed | Learn |

0 of 0 completed

For hydrogen, the Lyman emission series is the collection of all photons emitted when an excited electron drops to the ground state. What are the 3 largest wavelengths in the Lyman series?

In hydrogen emission, a famous emission line called the H-alpha line occurs at a wavelength of 656.28 nm. Which hydrogen series is the H-alpha line a part of?
A) The Lyman series (nf = 1)
B) The Balmer series (nf = 2)
C) The Paschen series (nf = 3)
D) The Brackett series (nf = 4)

A photon of 2.28 eV is absorbed by an electron in hydrogen. What is the minimum energy level (n) that the electron can be in to be ionized by this photon?

An atom undergoes a transition from a state with energy - 3.0 eV to a state with energy - 9.0 eV. What is the wavelength of the photon emitted in this transition?

Determine the frequency of the fourth Lyman line (n = 5 to n = 1transition) using the figure below. What photon energy does that correspond to?

The electron orbiting a hydrogen atom has an excited energy of -0.85 eV. What's the largest energy photon that can be emitted by this electron?

Doubly ionized Lithium, Li2+, has an electron in the ground state. What frequency photon does it need to jump from the ground state to the n = 3 excited state?

What is the potential energy and kinetic energy of an electron in hydrogen in the n = 3 excited state?

An electron in hydrogen is in the n = 5 ground state when it decays to the ground state. Estimate the recoil speed of the atom after the electron drops to the ground state. Note that the mass of a proton is about 1.67x10-27 kg, and the mass of an electron is about 9.11x10-31 kg.

In the quantum mechanical description of a hydrogen atom, the electron is in a state that has orbital angular momentum √12ℏ. What is the maximum possible ionization energy of this state of the atom?
A) 0.378 eV
B) 0.544 eV
C) 0.850 eV
D) 1.51 eV
E) 3.40 eV
F) none of the above answers

An atom is in a state that has energy -8.60 eV. What is the energy of the atom after it absorbs a photon that has wavelength 400 nm?
A) -3.10 eV
B) -11.7 eV
C) -5.50 eV
D) -8.60 eV
E) none of the above answers

The nucleus 2612Mg has a radius of approximately 3.55 fm. Which of the following nuclei has a radius approximately twice as large?
A) 5224Cr
B) 15296Cm
C) 136C
D) 32He
E) 20882Pb
F) none of the above answers

What is the longest wavelength light capable of ionizing a hydrogen atom in the n = 6 state?

The electron in the n = 5 orbital stays in then n = 5 orbital for 5 * 10 -10 s on average. Estimate the uncertainty of the proton energy from Heisenberg's uncertainty principle.

Consider the following diagram.
Say which arrows in the above diagram correspond to the following processes respectively: Absorption of a photon from the ground state to the first excited state; Emission of a photon from an excited state to another excited state.
1. Transition IV; Transition II
2. Transition I; Transition II
3. Transition IV; Transition III
4. Transition III; Transition IV
5. Transition II; Transition III
6. Transition I; Transition IV
7. Transition II; Transition IV
8. Transition III; Transition I
9. Transition III; Transition II
10. Transition I; Transition III

In the Bohr model description of a hydrogen atom, the atom is an state where the electron has angular momentum L = 4. What is the ionization energy of this state of the atom?A) 13.6 eVB) 3.40 eVC) 1.51 eVD) 0.850 eVE) 0.544 eVF) none of the above answers

The energy levels of a particular quantum object are −8.2 eV, −4.4 eV, and −1.8 eV. If a collection of these objects is bombarded by an electron beam so that there are some objects in each excited state, what are the energies of the photons that will be emitted?
1. 12.6 eV, 2.6 eV, 10 eV
2. 3.8 eV, 12.6 eV, 2.6 eV
3. −8.2 eV, −4.4 eV, −1.8 eV
4. 3.8 eV, 6.4 eV, 2.6 eV
5. 8.2 eV, −4.4 eV, −1.8 eV
6. −3.8 eV, −6.4 eV, −2.6 eV
7. 6.4 eV, −4.4 eV, 1.8 eV
8. 3.8 eV, 6.2 eV, 12.6 eV
9. 10 eV, −3.8 eV, 6.4 eV
10. 12.6 eV, 10 eV, 6.2 eV

A monochromatic laser is exciting hydrogen atoms from the n = 2 state to the n = 5 state. Eventually, all of the excited hydrogen atoms will emit photons until they fall back to the ground state. (a) How many different wavelengths can be observed in this process?(b) What is the shortest wavelength λmin observed?

Enter your friends' email addresses to invite them:

We invited your friends!

Join **thousands** of students and gain free access to **55 hours** of Physics videos that follow the topics **your textbook** covers.