The energy of a silver atom with a vacancy in K shell is 25.31 keV, in L shell is 3.56 keV and in M shell is 0.530 keV higher than the energy of the atom with no vacancy. Find the frequency of Kα, Lβ and Lα X-rays of silver.
Given:
Energy of electron in the K shell Ek= 25.31 KeV
Energy of electron in the L shell EL=3.56 Kev
Energy of the electron in the M shell Em=0.530 keV
let v1 be the frequency of 
x-ray , v2 and v3 be of the 
x-rays
x-ray is emitted when the transition takes place between 
kβ x-ray is emitted when the transition takes place between k and m shells
Lα x-ray is emitted when the transition takes place between l and m shells
v1=5.25×1018 hz
v2=5.985×1018 hz
v3=7.32×1017 hz
v1,v2 and v3 are the frequencies of 
x-rays
1