Measurements on sodium have provided the following data:
resistivity is 4.7 ×10^(-8) ohm m, hall coefficient is -2.5 ×10^(-10) m^3 c^(-1), the critical wavelength of transparency is 210 nm, and density is 971 kg m^(-3)
calculate:
i. the density of electrons.
ii. the mobility.
iii. the effective mass.
iv. the collision time.
v. the number of electrons per atom available for conduction.
electric conduction in sodium is caused by electrons. the number of atoms in a kg mole is 6.02 × 10^26 and the atomic weight of sodium is 23.