An excited state of a particular atom has a mean lifetime of 6.2×10−10 s , which we may take as the uncertainty δt.

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04-05-2018
Chemistry

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An excited state of a particular atom has a mean lifetime of 6.2×10−10 s , which we may take as the uncertainty δt.

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PBCHEM PBCHEM · Answer 1 · 2018-05-11T16:34:54+02:00

PBCHEM PBCHEM

11-05-2018

According to Heisenberg's Uncertainty Principle,
ΔE×Δt ≥ h/(4π)
where h = planck's constant = 6.63 × [tex] 10^{-34} [/tex] J.s

Hence, ΔE ≥ [tex] \frac{h}{4.pi.delta(t)} [/tex] = [tex] \frac{6.63X 10^{-34} }{4X3.142X6.2X 10^{-10}} [/tex]
∴, ΔE ≥ 8.5086 X [tex] 10^{-26} [/tex] J

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