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Q.
The element which is exclusively applied as semi-conductor
The p-Block Elements
Solution:
Both $Ge$ and $Si$ are extensively used as semiconductors. Semiconductors conduct electricity when there is only a small difference in energy, called band gap, between the filled valency band of electrons and a conduction band Since the band gap of $Ge$ is less than $Si$, it is a better element to be used as semiconductor.