Consider a Helium (He) atom that absorbs a photon of wavelength \( 330 \mathrm{~nm} \). The chan... VIDEO
Consider a Helium (He) atom that absorbs a photon of wavelength \( 330 \mathrm{~nm} \). The change in the velocity \( \left(\right. \) in \( \mathrm{cm} \mathrm{s}^{-1} \) ) of He atom after the photon absorption is
(Assume: Momentum is conserved when photon is absorbed).
Use: Planck constant \( =6.6 \times 10^{-34} \mathrm{Js} \), Avogadro number \( =6 \times 10^{23} \mathrm{~mol}^{-1} \), molar mass of \( \mathrm{He}=4 \mathrm{~g} \mathrm{~mol}^{-1} \)
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