chem 101

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. In an electron microscope the electrons generate the
image. For one of the scanning electron microscopes
in our Central Analytical Facility, the electrons are
accelerated to have a kinetic energy of 200,000 eV.
Electrons with this kinetic energy have a velocity of 2.67 x 10^8 m/s, almost 90% of the speed of light.
What is the wavelength of the electrons traveling at
this very high speed?

I have the answer i wan the process :2.72 pm

  • chem 101 -

    wavelength = h/mv
    h = Planck's constant
    m = mass electron in kg.
    v = velocity in m/s
    2.72 pm is correct.

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