Physics 2007 JAMB Past Questions - Question 14: the bond that forms a semiconductor is

Correct Answer

C

Explanation

The bond that forms a semiconductor is typically a covalent bond. In a covalent bond, two atoms share electrons to fill their outer electron shells, creating a stable electron configuration. Semiconductors are materials with a moderate band gap between the valence band (where electrons are tightly bound) and the conduction band (where electrons can move freely). This band gap is typically smaller than that of insulators but larger than that of conductors.

In a semiconductor, the covalent bonds between atoms create a crystalline structure, and these covalent bonds hold the atoms together in a solid form. When energy is supplied to the semiconductor, such as through heat or the application of an electric field, some electrons can be excited from the valence band to the conduction band, allowing them to conduct electricity. This property makes semiconductors essential in the construction of electronic devices like transistors, diodes, and integrated circuits.