Aie all ever 42 diffracted at angle 7.75° by planes with a separation of 2.64 a. the difference in energy between k shell and l shell in m, assuming a first ord

aie all EVer 42 diffracted at angle 7.75° by planes with a separation of 2.64 A. The difference in energy between K shell and L shell in M, assuming a first order difraction is (sin 7.75° =0.1349). (a) 2.788 x 10-16 J(6) 27.88 x 10-16J (c) 2.788 x 1016 J (d) 27.88 x 10-16 J When an electron in an excited M, atom, falls fromL to K shell, an X-ray is emitted. These X-rays are 43 The condition for complete distructive interference ofmonochormatic X-ravs ofwavelength2 difiacting