An electron has a de Broglie wavelength of 235 nm .What is the speed of the...

An electron has a de Broglie wavelength of 235 nm .What is the speed of the electron?

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How much energy is contained in 1 mol of γ-ray photons with a wavelength of 2.43×10⁻⁵ nm . ?

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In a technique used for surface analysis called auger electron spectroscopy (AES), electrons are accelerated toward a metal surface. These electrons cause the emissions of secondary electrons-called auger electrons-from the metal surface. The kinetic energy of the auger electrons depends on the composition of the surface. The presence of oxygen atoms on the surface results in auger electrons with a kinetic energy of approximately 490 eV .

What is the de Broglie wavelength of this electron?
[KE = 1/2mv2; 1 electron volt (eV) = 1.602×10−19J]

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queen_honey_blossom answered 1 year ago

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