For all these problems the wavelength is cu ka = 1.540 å)

nickel crystallizes in a face-centered cubic unit cell with atomic radius of 0.1246 nm. calculate: a) the unit cell parameter b) the volume of the unit cell c) the first four (hkl) reflections and the corresponding two theta values for this compound (λ=1.54 å)

you have a crystal which has the lattice parameter given below. it is fcc if your home in your country of origin is located to the north of equator, and bcc if your home in your country of origin is located to the south of equator; otherwise it is sc if your home is exactly along the equator. calculate the d and the corresponding 2θ values of the first 4 x-ray reflections of 3.xy where x is the position in the alphabet of your last name, and y your first name. so angela merkel would be 3.0113, and ziyi zhang would be 3.2626