Question

What is the energy of a 480 nm blue photon?

Answer #1

The hydrogen emission spectrum produces light at 430 nm (blue),
480 nm (blue-green) and 650 nm (red).
Find the energy in Joules and then in eV for a photon at each of
these wavelengths:
430 nm:
480 nm:
650 nm:
A metal surface has a work function (W0) of 2.7
eV. Of the three wavelengths of light in the hydrogen
spectrum, which would be able to release electrons from the metal
surface?
Calculate the kinetic energy in eV if any, of...

What is the speed of light for blue light (480 nm) in diamond
(n=2.419)?

Will a photon of light of wavelength 480 nm excite an electron
in the hydrogen atom from the n=1 level to the n=2 level?
Explain

What is the energy of a single photon that has a wavelength of 420
nm? What is the energy of a mole of photons with this
wavelength?

7. A blue laser with a wavelength of 480 nm and a yellow laser
with a wave length of 550 nm illuminates a diffraction grating with
100 rulings per mm. A screen 2 m wide is placed 2 m from the
diffraction grating. A. How many maxima are observed on the screen
from the blue laser? B. What is the distance between the first
maxima of the blue and green light?
Please explain!

Which is correct?
A. A photon from bright blue light has more energy than a photon
from dim blue light.
B. Microwaves have higher energy than blue light. That is why
microwaves are used to cook food and blue light is not.
C. Blue light, microwave radiation and x-ray are essentially
identical. The only real difference is their wavelengths,
frequencies and energies.
D. A photon from a 1000 watt microwave oven has more energy than a
photon from a 100...

Calculate the energy, in joules, for a photon of 1024 nm
light.

Calculate the difference in energy (in joules) between a
photon with
λ
= 719 nm and a photon with
λ
= 339 nm. Enter your answer in scientific
notation.

A hydrogen atom in the ground state absorbs a photon of
wavelength 95.0 nm.
What energy level does the electron reach?
This excited atom then emits a photon of wavelength 434.1 nm.
What energy level does the electron fall to?
-I know this question has already been asked on Chegg but each
question I go to has different calculations and I can't get the
right answer.

A. An electron emits a photon with an energy of 424 nm as it
relaxes to (n=2) what is the initial energy level of this
electron?
B. Is energy released or absorbed a result of this transition?
Briefly explain.
C. Calculate the wavelength (nm) of the electron having the
kinetic energy (K.E. = 1/2 mv^2) of the above transition 434
nm.
D. If an electron has the following three quantum number, n=2,
l= 1, m= 0, and m=-1/2. Briefly explain...

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