Monday
March 30, 2015

Homework Help: chemistry

Posted by Tina on Monday, March 21, 2011 at 12:08am.

The electron in a hydrogen atom is excited and makes a transition from n=2 to n=7

a. calculate the energy of the photon absorbed in joules.
b. calculate the wavelength of the photon in meters

HOW DO I DO THIS?

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