Question

Explain the classification of solids on the basis of electrical conductivity.

Answer 1

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

Conductors: Conductors are defined as solids with electrical conductivities between 10⁴ and 10⁷ ohm⁻¹ m⁻¹. For example, ionic solids (electrolytes) and metals.

Insulators: insulators are defined as solids with low electrical conductivities, between 10⁻²⁰ and 10⁻¹⁰ ohm⁻¹ m⁻¹. For example, molecular solids and nonmetals.

Semiconductors: Semiconductors are defined as solids with electrical conductivities between 10⁻⁶ and 10⁴ ohm⁻¹ m⁻¹. such as metalloids such as Si, Ge, etc.