Answer
See answers.
Work Step by Step
See Example 28-7, which illustrates how the Bohr model can be used to calculate the wavelengths of x-rays corresponding to electron transitions.
In that example, for an electron dropping from n = 2 down to n = 1 in molybdenum (Z=42), the wavelength is estimated to be 0.072 nm. This is very close to the observed $K_{\alpha}$ line at 0.071 nm, so we attribute the $K_{\alpha}$ line to the transition between n = 2 and n = 1.
Similarly, we can use the Bohr model to estimate the wavelength of an electron dropping from n = 3 down to n = 1 and match it to the $K_{\beta}$ line.
We can estimate the wavelength of an electron dropping from n = 3 down to n = 2 and match it to the $L_{\alpha}$ line, etc.