CAIE A-Level Physics A2 22.4.1 There Are Discrete Electron Energy Levels in Isolated Atoms E G Atomic Topic Practice

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Question 1

[Maximum number: 3]

Some of the electron energy bands in a solid are illustrated in Fig. 12.1.

Fig. 12.1

Fig. 12.1

In isolated atoms, electron energy levels have discrete values. Suggest why, in a solid, there are energy bands, rather than discrete energy levels.

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