Waves, Photons & the EM Spectrum

What is the wavelength, in picometers, of a helium-4 atom with a kinetic energy of 0.10 eV. (mass of 4He = 4.0026 amu; 1 amu = 1.67 10–24 g; 1 eV = 1.602 10–19 J; h = 6.626 10–34 J s) ................
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