Question

An x-ray generator operated at a plate voltage of 7000 V is incapable of producing Ni Kα radiation. Calculate the minimum energy required for a ballistic electron to produce Ni Kα radiation. Express your answer in units of eV.

Answer 1

To two digit accuracy Moseley's law is
10.2 ev x (atomic number -1)^2 =
10.2 x *(27)^2 = ? eV

Answer 2

7435.8