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23-11-2017
Chemistry

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Calculate the energy gap between the excited and ground states for the sodium ion.

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02-12-2017

Answer: Ground state of Hydrogen = -13.6 eV Energy of photon emission: E = hf = hc/Î» = 6.6256E-34 (3E8)/680E-9 E = 0.0292E-17 J(1 eV/1.6E-19 J) = 1.825 eV E(photon) = 1.825 eV Bandgap energy: Î”E = E â€“ Eo = 1.825 â€“ (-13.6) = 15.425 eV

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