Chemistry

For my homework, there are two parts to the question. i did part a and I got
E= -6.54E-18J.
Part A) Calculate the energy (in J) of the photon associated with the transition of the electron in He from n=2 to n=1.

Part B) As the Vaule of Z increases, does the wavelength of the photon associated with the transition from n=2 to n=1 increase or decrease?

Please show me the steps or give me some helpful information so, I can learn how to do it on my own.

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  1. What equation did you use for part a?
    That will tell you the answer for part b but we can help you through it if you have trouble.

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