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Topic: maximum wavelength (Read 161 times)

APchem

Labrat

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maximum wavelength

« on: September 30, 2008, 08:00:12 PM »

I am trying to determine the maximum wavelength that can ionize a gold atom. I have the ionization energy of gold being 890.1 kJ/mol and light wavelength being 175 nm.


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where is this 1

valdorod

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Re: maximum wavelength

« Reply #1 on: October 01, 2008, 01:16:17 PM »

The maximum wavelength corresponds to the minimum amount of energy that a photon can have to ionize an atom.

Use E = h*c/λ

where E = energy in J/photon
c= speed of light 2.998 x 10⁸ m/s and
λ = the wavelength in meters (m)

you will need to convert your energy from kj/mol into j/photon using avogadro's number.


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Valdo

CuLaTeRh

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