Question

Classify the solids on the basis of their electrical properties.

Answer 1

According to their electrical conductivity, solids are divided into three groups:

1. Conductors: Conductors are defined as substances that allow the flow of electric current easily. It solidifies with electrical conductivities between 10⁴ and 10⁷ ohm⁻¹ m⁻¹. For example, ionic solids (electrolytes) and metals.
2. Insulators: Insulators are defined as substances that do not conduct electricity under normal conditions. It solidifies with low electrical conductivities, between 10⁻²⁰ and 10⁻¹⁰ ohm⁻¹ m⁻¹. For example, molecular solids and nonmetals.
3. Semiconductors: Semiconductors are defined as substances whose electrical conductivity is between conductors and insulators It solidifies with electrical conductivities between 10⁻⁶ and 10⁴ ohm⁻¹ m⁻¹. such as metalloids such as Si, Ge, etc.