Question

A hydrogen atom transitions from the n = 6 excited state to the n = 3 excited state, emitting a photon.

a) What is the energy, in electron volts, of the electron in the n = 6 state? How far from the nucleus is the electron?

b) What is the energy, in electron volts, of the photon emitted by the hydrogen atom? What is the wavelength of this photon?

c) How many different possible photons could the n = 6 electron generate by dropping to a lower level (not just the n = 3 state)?

d) After reaching the n = 3 state, the electron absorbs an photon with an energy of 50 eV, which ionizes the hydrogen atom (i.e., the electron reaches n=infinity). What is the wavelength of the electron after it is ejected from the hydrogen atom?

Answer #1

Q6] A hydrogen atom transitions from the ni = 5 state down to
the ground state. In the process it emits a photo of light. The
photon then strikes a photo-electric material with a work function
of Wo = 7.5eV . a) What is the wavelength of the photon emitted
from the transition of the hydrogen atom? b) What is the kinetic
energy of the electron ejected from the photo-electric
material?

Consider the following four transitions in a hydrogen atom.
(i) ni = 6, nf = 9 (ii) ni = 6, nf = 12 (iii) ni = 10, nf = 12
(iv) ni = 9, nf = 6
(a) Give the wavelength of the longest-wavelength photon that
can be emitted or absorbed by these transitions. m
(b) Give the wavelength of the shortest-wavelength photon that
can be emitted or absorbed by these transitions. m
(c) For which of these transitions does...

Answer the following questions using the Bohr model of the
hydrogen atom.
a) A hydrogen atom is the n = 3 excited state when its electron
absorbs a photon of energy 4.40 eV. Draw a diagram roughly to
scale, of relevant energy levels for this situation. Make sure to
show and label the initial energy of the H atom in the n=3 state,
the energy level at which this atom loses its electron, and kinetic
energy of the electron.
b)What...

A hydrogen atom is initially at n=2 excited state and then
absorbs energy 2.86 eV. The excited state is unstable, and it tends
to finally return to its ground state. 8%
(a) How many possible wavelengths will be emitted as the atom
returns to its ground state? (also draw a diagram of energy levels
to illustrate your answer)
Calculate the second shortest wavelength emitted.

A hydrogen atom is initially at n=2 excited state and then
absorbs energy 2.55 eV. The excited state is unstable, and it tends
to finally return to its ground state.
(a) How many possible wavelengths will be emitted as the atom
returns to its ground state? draw a diagram of energy levels to
illustrate answer
Answer: (number) ________
(b) Calculate the shortest wavelength emitted.
Answer: ________

The electron in a hydrogen atom falls from an excited energy
level to the ground state in two steps, causing the emission of
photons with wavelengths of 656.5 nm and 121.6 nm (So the in the
first step the 656.5 nm photon is emitted and in the second step
the 121.6 nm photon is emitted). What is the principal quantum
number (ni) of the initial excited energy level from which the
electron falls?

A hydrogen atom (Z=1) is in the third excited state. It makes a
transition to a different state, and a photon is either emitted or
absorbed. Answer the following conceptual questions:
What is the quantum number of the third excited state?
When an atom emits a photon, is the final quantum number of the
atom greater than or less than the initial quantum number?
When an atom absorbs a photon, is the final quantum number of
the atom greater than...

1. a. A photon is absorbed by a hydrogen atom causing an
electron to become excited (nf = 6) from the ground state electron
configuration. What is the energy change of the electron associated
with this transition?
b. After some time in the excited state, the electron falls from
the n = 6 state back to its ground state. What is the change in
energy of the electron associated with this transition?
c. When the electron returns from its excited...

Suppose that an electron is in an excited state of a Hydrogen
atom at the n = 4 energy level. (a) How
many different states are available for that electron to
occupy?(b) Suppose that the electron falls
directly to the ground state, causing a single photon to be
released from the atom. What is the photon’s wavelength?
(c) After its release, the photon collides with an
electron at rest, and scatters off at a 60o angle with
respect to its...

Suppose that an electron is in an excited state of a Hydrogen
atom at the n = 4 energy level.
(a) How many different states are available for
that electron to occupy?
(b) Suppose that the
electron falls directly to the ground state, causing a single
photon to be released from the atom. What is the photon’s
wavelength?
(c) After its
release, the photon collides with an electron at rest, and scatters
off at a 60o angle with respect to...

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