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Chapter 1: Problem 10

The eneryy band in which free efections exist is the (a) firs band (b) second band (c) conduction band (d) valence hand

Short Answer

Expert verified
The energy band in which free electrons exist is the \( (c) \) conduction band.

Step by step solution

01

Understand Energy Bands

In solid materials, electrons occupy different energy levels that are grouped into bands. There are two primary energy bands: the valence band and the conduction band. The valence band consists of electrons that are tightly bound to the atoms of a material and not free to move. The conduction band consists of electrons that are free to move and participate in electrical conduction.
02

Relate Free Electrons to Energy Bands

Free electrons are the ones that can move within a material and contribute to its electrical conductivity. These electrons exist in the energy band that allows them to move freely and be involved in the electrical conduction process.
03

Identify the Correct Energy Band

Since we are looking for the energy band in which free electrons exist, we can identify it by recalling that free electrons are found in the energy band that allows for electrical conduction.
04

Select the Correct Answer

With the understanding of energy bands and the role of free electrons, we can now confidently answer the given question. The energy band where free electrons exist is the (c) conduction band.

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