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A material in which electrons are tightly bound and cannot move freely at room temperature is called
  • a)
    conductors
  • b)
    superconductors
  • c)
    semiconductors
  • d)
    insulators
Correct answer is 'D'. Can you explain this answer?
Verified Answer
A material in which electrons are tightly bound and cannot move freely...
Insulators are those materials in which electron are tightly bound and cannot move freely at room temperature.
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Most Upvoted Answer
A material in which electrons are tightly bound and cannot move freely...
Insulators show this property because they have a large energy gap, Eg, between the valence band and conducting band. Hence the electrons at room temperature are unable to gain sufficient amount of Kinetic Energy to jump to the valence band and hence become conducting. That is why electrons in an insulator are tightly bound and have negligible mobility at room temperature.
Community Answer
A material in which electrons are tightly bound and cannot move freely...
As conduction is due to free electrons so no free electrons means no conduction hence insulators
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A material in which electrons are tightly bound and cannot move freely at room temperature is calleda)conductorsb)superconductorsc)semiconductorsd)insulatorsCorrect answer is 'D'. Can you explain this answer?
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