Question

A photon is emitted from a hydrogen atom when an electron goes from the n = 6 to the n = 2 state. What kind of electromagnetic radiation is this? Select one:

a. Visible Light

b. Ultraviolet Light

c. Infrared Radiation

d. X-Ray Radiation

e. Microwave Radiation

Answer #1

**Solution: **When an elctron jump from
n_{i} =6 to n_{f} =2

Then for the transition for ni=6 to nf =2, by using the
**Rydberg equation**.

**1/ λ=R x
(1/nf ^{2}−1/ni^{2})**

where λ is the **wavelength** of the emittted
photon

and R is the **Rydberg constant**, which is equal
to 1.097x10^{7} m^{−1}

On putting the values,

1/λ=1.097x10^{7} m^{−1}x
(1/2^{2}−1/6^{2})

1/ λ=2.4378x10^{6} m^{−1}
hence,

λ=4.10 x10^{−7}m = **410 nm**

So, you know that when an electron falls from ni=6 to nf=2, a
photon of wavelength 410 nm is emitted and this range of wavelength
is shown by **Visible** **light** (400-
700 nm).

Light is emitted from a hydrogen atom as an electron in the atom
jump from the n=9 orbit to the n=3 orbit.
What is the energy of the emitted photon in eV?
(b) What are the frequency and wavelength of the photon?
(c) In which frequency range (UV, visible, IR) is the emitted
electromagnetic radiation? Justify your answer.

4. [15] Light is emitted from a hydrogen atom as an electron in
the atom jump from the n=9 orbit
to the n=3 orbit.
(a) [7] What is the energy of the emitted photon in eV?
(b) [4] What are the frequency and wavelength of the photon?
(c) [4] In which frequency range (UV, visible, IR) is the
emitted electromagnetic radiation?
Justify your answer.

Q1)
Calculate the energy of an electron in the n =
2 level of a hydrogen atom.
Energy = _______Joules
Q2)
What would be the wavelength of radiation emitted from a
hydrogen atom when an electron moves from the n =
2 to n = 1energy level?
In what region of the spectrum does this radiation lie?
Wavelength = ________nm
Region = _________(ultraviolet or visible or infrared)

a. what is the energy of the emitted photon if an electron in
the hydrogen atom makes a transition from the n=7 state to the n=2
state?
b. Now, Imagine there is a photon with the same wavelength. What
is the speed of this photon?

Which is greater: The energy of a
photon emitted from a hydrogen atom when the electron makes a
transition from the n = 3 to the n = 1 energy
level, or
• the kinetic energy of a 2 gram Ping-Pong ball moving with a
speed of 1 m per hour?

Calculate the energy of the emitted photon as well as the
wavelength and frequency of electromagnetic radiation emitted from
the hydrogen atom when the electron undergoes the transition from n
= 5 to n = 1. In what region of the spectrum does this line
occur?

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...

What is the wavelength of the photon emitted as the electron in
the hydrogen atom transitions from the 3rd to 2nd level? What is
the frequency of the photon and what is the energy carried by the
photon?
got -6606 A for the first one and I'm not sure if I'm doing it
right

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...

6.
a) For a hydrogen atom, if the emission energy associated when
the electron starts at n = 8 is 2.65 x 10-20 J, at what
energy level does the photon finish at?
b) What type of electromagnetic radiation is associated with
this change

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