Question

The upper level of valence band and lower level of conduction band overlap in the case of

• A. silicon
• B. copper
• C. carbon
• D. germanium

Answer 1

The Correct Option is B

In copper, the valence band and conduction band overlap, allowing electrons to flow freely and making copper an excellent conductor. In contrast, in materials like silicon and germanium, there is a gap between the valence and conduction bands, making them semiconductors.