Which row in the table describes the conduction band and the gap between the conduction band and the valence band in an insulator?
Conduction band | Gap between conduction band
-----------------------------------|--------------------------------
A unfilled | bands overlap
B full | bands overlap
C unfilled | large gap
D full | small gap
E full | large gap - Scottish Highers Physics - Question 24 - 2022
Question 24
Which row in the table describes the conduction band and the gap between the conduction band and the valence band in an insulator?
Conduction band ... show full transcript
Worked Solution & Example Answer:Which row in the table describes the conduction band and the gap between the conduction band and the valence band in an insulator?
Conduction band | Gap between conduction band
-----------------------------------|--------------------------------
A unfilled | bands overlap
B full | bands overlap
C unfilled | large gap
D full | small gap
E full | large gap - Scottish Highers Physics - Question 24 - 2022
Step 1
Identify the characteristics of insulators
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Answer
In insulators, the conduction band is typically unfilled, meaning that there are no free charge carriers available for conduction. Additionally, the gap between the conduction band and the valence band is large, which prevents electrons from easily moving from the valence band to the conduction band.
Step 2
Select the correct row based on insulator properties
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Answer
Considering the characteristics identified, the option that aligns with an insulator is:
C unfilled and large gap between the conduction band and the valence band.
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