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SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsSEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS2 Marks
Question
Explain that the nature of electron motion in a solid is very different from that in an isolated atom.
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Answer

→According to the Bohr atomic model, in an isolated atom, the energy of any of its electrons is decided by the orbit in which it revolves.
→But when the atoms come together to form a solid, they are close to each other.
→So the outer orbits of the electrons from neighbouring atoms would come very close or could even overlap.
→This would make the nature of electron motion in a solid very different from that in an isolated atom.

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