The visible emission spectrum of hydrogen involves a transition
to n final = 2. What is...
The visible emission spectrum of hydrogen involves a transition
to n final = 2. What is initial for the line of the emission
spectrum at 434 nm? a. 5 b. 6 c. 4 d. 3 e. 7
1. Fireflies emit light across the visible spectrum, but the
peak intensity of their emission is around a wavelength of 550 nm.
So let’s make the approximation that all of the light emitted by a
firefly has a wavelength of 550 nm. (a) A typical flash of light
from a firefly lasts for about 100 ms and has a power of 1.2 mW.
How many photons are emitted in each flash. (b) An “electron volt”
(eV) is a unit of...
The hydrogen atom has an emission at 1875 nm. What transition is
responsible for this spectral line? What region of the
electromagnetic spectrum would it appear? (7 pts)
- Neon Emission Spectrum
A. Based on the emission spectrum for neon, what color would you
predict for the neon tube? ______________________________
B. Search on Google for an image photo of a neon spectrum tube.
Was your prediction correct? ____________________________
C.What is responsible for the color of a neon discharge
tube?_________________________________________________________
- Sodium Emission Spectrum
A. The most prominent line in the emission spectrum of sodium is
the result of a transition from a 3p to a 3s orbital. The...
Recall that an emission transition involves a jump from an upper
energy level down to a lower energy level. With this in mind, what
quantum number do lines of the Lyman series have in common? The
Balmer series? The Paschen series? How can we designate a set of
lines as a “series”?
Which spectral lines in the emission spectrum of
hydrogen atoms can be observed if the atoms are excited by
electrons with kinetic energy E_kin = 13.3eV?
What is a blackbody spectrum? What is an emission line spectrum?
What is an absorption line spectrum? How are each created? Which of
these spectra (or which combination of these spectra) best
describes the light coming form the sun?
In Lyman series, one wavelength in the ultraviolet part of the
hydrogen emission spectrum has wavelength 97.2 nm.
a) What is the initial state of the transition that results in this
wavelength
being emitted? b) What is the radius of the orbit for the initial
state of the atom? c) What is the energy of the initial and final
state? d) What would be the velocity of an electron of hydrogen
atom in an orbit
for n = 3 according...
1. Which involves an emission of greater energy in the H atom,
an emission from n=5 to n=2 or a emission from n=4 to n=1?
Explain.
2. Calculate the energy of transmission from n=3 to n=1. In what
region of electromagnetic spectrum is this radiation found?
3. Excited H atoms give off radiation in the infrared region
known by the Pfund series. It results when electrons fall from
higher energy levels to n=5. Calculate the energy and the frequency
of...
Calculate the energy spectrum of the n=2 states of the hydrogen
atom including the fine structure correction. How is this spectrum
changed when the atoms is placed in an external magnetic field of
2.5 Tesla?
The only visible spectral lines of hydrogen are the four Balmer
series lines (transitions to n=2). We wish to cause hydrogen gas to
glow with all its characteristic visible colors.
a) To how high an energy level must the electrons be
excited?
b) Energy is absorbed in collisions with other particles. Assume
that after absorbing energy in one collision, an electron jumps
down through lower levels so rapidly so that it is in the ground
state before the collision occurs....