9. The structure factor for copper
fcc lattice with one atom in [000] relative to the lattice point.
r1= [0,0,0], r2= [1/2,1/2,0], r3= [1/2,0,1/2], r4= [0,1/2,1/2]

10. The structure factor for copper
Result:
hkl even: F=fCu( )=4fCu
hkl odd: F=fCu( )=4fCu
h odd, k and l even: F=fCu( )=0
h and k odd, l even: F=fCu( )=0
Conclusion: hkl even or odd gives allowed reflections, hkl mixed gives forbidden reflections

11. The reciprocal lattice for bcc iron?
Body centered cubic lattice
One atom per lattice point, [000] relative to the lattice point
What is the reciprocal lattice?