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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: KeLlI on October 28, 2004, 09:27:34 PM

Title: wavelengths
Post by: KeLlI on October 28, 2004, 09:27:34 PM

the line spectrum of litjium has a red line at 670.8nm. calculate the energy of a photon with this wavelength.please explain how to do this problem. i have no idea how to do it!

Title: Re:wavelengths
Post by: ssssss on October 29, 2004, 09:28:10 AM

Use the Planck equation of electromagnetic waves.
E=hv.Energy is in J/photon.

Please refer your book before asking the direct questions.