Homework Help: chemistry

Posted by chironjit on Tuesday, December 4, 2012 at 6:35pm.

For the hydrogen atom where Rh=2.18*10^-18 J, the wavelength of the transition from the ground state to the n=3 state is_____?

chemistry - DrBob222, Tuesday, December 4, 2012 at 6:53pm
First I don't think R_H = 2.180E-18 J.
R_H = 1.09737E7
1/wavelength = 1.09737E7(1/1 - 1/9) and solve for wavelength in meters.
If you want to use that 2.18E-18 J number, that can be done this way.
delta E = 2.180E-18J x (1/1 - 1/9)
Then E = hc/wavelength and solve for wavelength.

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