  
 Exa-3.6(a)   
The wavelength of x-rays after scattering is 0.2412 nm
 
 Exa-3.6(b)   
The energy of scattered x-rays is 5141 eV
 
 Exa-3.6(c)   
The kinetic energy of the x-rays is 26.025 eV
 
 Exa-3.6(d)   
The direction of the scattered eletron is 59.7 degrees 