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The ionization energy of aluminum is 577.6kJ/mol. What is the longest wavelength of light to which a single photon could ionize an aluminum atom?
The first thing to do here is to calculate the ionization energy for one atom of aluminium, $"Al"$, by suing the fact that you know the energy needed to ionize...
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What is the energy of a photon of light with a wavelength of 575 nm?
The energy of a photon is proportional to its frequency, as stated by the Planck - Einstein's equation $color(blue)(E = h * nu)" "$, where $E$ -...
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A monochromatic green light source used in a diffraction experiment has a wavelength of $5.80 *10^-7$ m. What is the frequency of the light? What is the energy of a photon of this light?
The inverse relationship that exists between wavelength and frequency is described by the equation $color(blue)( lamda * nu = c)" "$, where $lamda$ - the frequency of...
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Microwave ovens emit microwave energy with a wavelength of 12.2 cm. What is the energy of exactly one photon of this microwave radiation?
Let us calculate the frequency $nu$ of the photon. We have the expression between the velocity of light in vacuum $c=nuxxlambda$ or $nu=c/lambda$......(1) where $lambda$ is the wave-length of...
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Consider an electromagnetic wave with a frequency of $3.0xx10^10$ $Hz$.
What is its wavelength?
What is the energy of one photon of this light?
For electromagnetic radiation: $c=flambda$ where $c$ is the speed of light, $f$ is the frequency, $lambda$ is the wavelength. Rearranging: $lambda = c/f=(3.0xx10^8)/(3.0xx10^10)=10^-2$ $m$ The energy of a photon is...
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How do you calculate the energy, in eV, off a photon of light of wavelength 490 nm?
To find the energy of a photon you use the Planck Expression: $sf(E=hf)$ $sf(h)$ is the Planck Constant which = $sf(6.63xx10^(-34)color(white)(x)J.s)$ $sf(f)$ is the frequency This becomes: $sf(E=(hc)/lambda)$ $sf(c)$ is...
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A photon has a wavelength of 3.5 A0. Calculate its mass. (Planck's constant, h = 6.626 x 10-34 Js. Velocity of light = 3 x 108 m/s)
What is de answer?
It has no rest mass. It's a photon. It's light. You CANNOT logically use $lambda = h/(mv)$ on a photon. Doing so violates Einstein's theory of relativity...
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Green light has a wavelength of 5200 A. How do you calculate the energy of one photon of green light?
We're asked to calculate the energy of one photon of a green light, given its wavelength of $5200$ $"Å"$. To do this, we can use the equation...
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An electron in a mercury atom jumps from level $a$ to level $g$ by absorbing a single photon. How do you determine the energy of the photon in joules?
Relativistic effects are present here... but I assume that the transition from level $a$ to level $g$: has $DeltaL = pm 1$ (the total change in angular momentum is...
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If the energy of an X-ray photon is $"100 keV"$, then if its wavelength matches that of the ejected core electron, what should be the kinetic energy of that electron?
About $"9.78 keV"$, assuming $100%$ transfer of energy. The de Broglie wavelength $lambda$ is given by $lambda = h/p = h/(mv)$, where: $h = 6.626 xx 10^(-34)...
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