Band Theory
(A) Give a brief description of the formation
of electron bands in crystals including reference to the atomic
structure of the constituent atoms.
(B) Explain the following
i.Sodium, which has 2 atoms in a bcc
(conventional cubic) unit cell, is a metal
ii.Calcium, which has 4 atoms in a
fcc (conventional cubic) unit cell, is a metal
iii.Diamond, which has 8 atoms in a
fcc (conventional cubic unit cell with a basis, is an electrical
insulator, whereas silicon...