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Posted by on Sunday, June 30, 2013 at 3:24pm.

what is the wavelength of the radiation absorbed when an electron move from n=2 to n=5 for a helium +1 ion?

  • chemistry - , Sunday, June 30, 2013 at 5:46pm

    1/wavelength = RZ^2(1/2^2 - 1/5^2)
    R = Rydberg constant
    Z = 2 for He.

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