Author: Study Clue

In the nearly-free electron model, the first band gap size is mainly proportional to A Lattice temperature only B Electron

In Kronig–Penney, band width mainly increases when adjacent wells have A Higher tunneling B Lower tunneling C No periodicity D

In Kronig–Penney, increasing barrier height mainly tends to A Shrink band gaps B Remove periodicity C Fix Fermi level D

In a crystal, allowed energy ranges are mainly called A Forbidden gaps B Lattice nodes C Energy bands D Photon

In the Kronig–Penney picture, why do energy bands form in a crystal A Random atomic collisions B Single isolated atoms

In classical harmonic solid, why does equipartition give molar heat capacity 3R rather than 3R/2 A Only kinetic terms B

In classical theory, why does a vibrating atom contribute kB per direction to internal energy A Only kinetic part B

For a monoatomic solid, why does Dulong–Petit give 3R at high temperature for one mole A Two rotational modes B

For one mole of a solid, what does “3R” represent in Dulong–Petit law A B. Fermi energy value B A.

What does Dulong–Petit law predict for molar heat capacity at high temperature A 3R value B R/2 value C 2R