Question

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.

Answer #1

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: ________

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...

A mercury atom is initially in its lowest possible (or ground
state) energy level. The atom absorbs a photon with a wavelength of
185 nm and then emits a photon with a frequency of 4.924 x 10^14
Hz. At the end of this series of transitions, the atom will still
be in an energy level above the ground state. Draw an energy-level
diagram for this process and find the energy of this resulting
excited state, assuming that we assign a...

A hydrogen atom at rest is initially in an excited state
corresponding to n = 5.
a- Give the quantum numbers (l) and (m) which correspond to n =
5
b- What is the ionization energy of the atom in this state?
c- What is the frequency of the photon emitted when it returns
to its ground state n = 1?
d- Estimate the momentum and the kinetic energy of the atom's
recoil during the photon emission.
mH= 1.007825? 1?...

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, and a
photon is either emitted or absorbed. Determine
(a) the quantum number nf of the final state
(b) the energy of the photon when the photon is emitted with the
shortest possible wavelength
(c) the quantum number nf of the final state
(d) the energy of the photon when the photon is emitted with the
longest possible wavelength
(e) the quantum number nf of the final state...

A triply ionized beryllium atom is in the ground state. It
absorbs energy and makes a transition to the n = 7 excited state.
The ion returns to the ground state by emitting SIX photons ONLY.
What is the wavelength of the second highest energy photon?

4 a) A hydrogen atom in the ground state absorbs a photon of
wavelength 97.2 nm. What energy level does the electron reach?
b) This excited atom then emits a photon of wavelength 1875.4
nm. What energy level does the electron fall to?

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...

A certain diatomic molecule absorbs energy by rotating. The
first excited rotational state is at an energy of 0.10 eV above the
ground state. What is the energy of the second excited rotational
state above the ground state? (a) 0.15 eV (b) 0.20 eV (c) 0.30 eV
(d) 0.40 eV
The answer is C please show me how it is that.

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