First slide
Classification of Metals, semiconductors and insulators
Question

Statement I: Silicon is preferred over germanium for making semiconductor devices.

Statement II: The energy gap for germanium is more than the energy gap of silicon.

Moderate
Solution

The energy gap for germanium is less (0.72 eV) than the energy gap of silicon ( 1.1 eV). Silicon is preferred over germanium for making semiconductor devices because they are abundantly available in nature, do not get easily damaged by heat and cut off current is very low.

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