Verify the numerical factor 0.121 in Eq. 41-9.
The numerical factor is equal to the numerical factor 0.121.
The equation of Fermi energy according to Eq. 41-9 is
where, n is the number of conduction electrons per unit volume, m is the mass of an electron and h is the Planck’s constant.
The highest level to be occupied by the electron in the valence band at 0 K is known as Fermi level.
From the given Fermi energy equation, the numerical constant value is given by,
Hence, the numerical factor 0.121 is verified.
Calculate the number density (number per unit volume) for (a) molecules of oxygen gas at and 1.0 atm pressure and (b) conduction electrons in copper. (c) What is the ratio of the latter to the former? What is the average distance between (d) the oxygen molecules and (e) the conduction electrons, assuming this distance is the edge length of a cube with a volume equal to the available volume per particle (molecule or electron)?
Figure 41-1a shows 14 atoms that represent the unit cell of copper. However, because each of these atoms is shared with one or more adjoining unit cells, only a fraction of each atom belongs to the unit cell shown. What is the number of atoms per unit cell for copper? (To answer, count up the fractional atoms belonging to a single unit cell.)
94% of StudySmarter users get better grades.Sign up for free