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.

Answer 1

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.

Answer 2

do the (*) mean multiple..or are you using them to separate the numbers??

Answer 3

* means multiply.