Question

A semiconductor is formed by bonds.
A) Covalent
B) Electrovalent
C) Co-ordinate
D) None of the above

Answer 1

Hint: To solve this we have to know about the semiconductor. Semiconductor is nothing but its conductivity lies between conductors and insulators. Semiconductor comes with fusion properties of both conductors and insulators in the room temperature; it possesses less conductivity than conductors.

Complete answer:
Silicon is an example of a semiconductor, the silicon material is made up of individual atoms bonded together in a regular periodic structure to form an arrangement like each atom is surrounded by 8 electrons. These electrons surrounding each atom of silicon semiconductor are a part of a covalent bond. If two atoms share a single electron through this it forms a covalent bond. Likewise, it forms 4 covalent bonds with the four surrounding atoms. Therefore, between each atom and its four surrounding atoms totally 8 electrons are being shared.

Hence, the covalent bond is the correct answer which is mentioned in option A.

Additional information:
A semiconductor is a substance of chemical element or compound, that can conduct electricity under some conditions but not other materials, making it a good medium for the control of electrical current because of this reason it is highly used in the industry.
Gallium arsenide, germanium and silicon are some of the most commonly used semiconductors. Silicon is used in electronic circuit fabrication, and gallium arsenide is used in solar cells, laser diodes and many more.

Note:
Germanium is another example of a semiconductor which is denoted as `Ge`. Metals are the good conductors means it allows freely to flow electricity, it includes copper and aluminium, which are widely used in electronics. Similarly glass, wood and plastic extra are the insulators which prevent the flow of current.