An energy band in a solid consists of
A) an infinite number of levels, with each level corresponding to a point in a box.
B) a large number of energy levels so closely spaced that they may be regarded as a continuous band.
C) an infinite number of wave functions, with each wave function corresponding to a point in a box.
D) a large number of electrons so closely spaced that they may be regarded as a continuous band of electric charge.
E) an infinite number of electrons, with each electron corresponding to a point in a box.

Question

Quizplus · Accepted Answer

An energy band in a solid consists of a large number of energy levels so closely spaced that they may be regarded as a continuous band. This is because the energy levels in solids are so closely spaced due to the interactions between neighboring atoms, that they form a band of states rather than discrete levels.

An Energy Band in a Solid Consists of