One of the emission spectral lines for Be3_ has a
Chapter , Problem 126(choose chapter or problem)
One of the emission spectral lines for Be3_ has a wavelength of 253.4 nm for an electronic transition that begins in the state with n_5. What is the principal quantum number of the lower-energy state corresponding to this emission? (Hint: The Bohr model can be applied to one-electron ions. Dont forget the Z factor: Z _ nuclear charge _ atomic number.)
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