Homework Help: chemistry

Posted by tammy on Tuesday, January 31, 2012 at 11:03pm.

The energy levels the electron can occupy in the He+ ion can be calculated using the energy level equation. Calculate the frequency (Hz) of the photon emitted when the electron goes from a n= 4.00 energy level to a n= 3 energy level. Express answer in scientific notation.

chemistry - DrBob222, Tuesday, January 31, 2012 at 11:23pm
1/wavelength = 2.180E-18*Z^2*(1/3^2-1/4^2)
Z for He is 2 so Z^2 = 4.
Find wavelength, then c = frequency x wavelength to convert to frequency.
chemistry - tammy, Tuesday, January 31, 2012 at 11:36pm
do the (*) mean multiple..or are you using them to seperate the numbers??
chemistry - DrBob222, Wednesday, February 1, 2012 at 1:38am
* means multiply.

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