ClarenceDCraig9278 ClarenceDCraig9278 29-12-2023 Physics contestada Given that the material A crystallizes in the face-centered (FCC) lattice with a parameter of 0.4 nm, determine the effective mass of an electron at the point.(a) 0.4mₑ(b) 0.2mₑ(c) 1.6mₑ(d) 0.8mₑ