We have a 3-dimensional lattice structure with a basis of 4 atoms at the following coordinates. a) Describe and draw what is this structure?? a a 1.1 = (0)0;0) r2 = 3(0'1'1) r3 = 5(1IOJ1) r4 = 5(1'1'0) 2n G = 7011' n2, n3) Where,n1,n2,n3 are integers b) Calculate 5G for different combinations of n1,n2,n3 , being odd or even to define zero and non-zero xray amplitudes. Here f is the form factor and is a constant. SGZfZ eiG'I'j