Question

explain the conductivity in solids.

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Answer 1

hey dear here is your answer ✍️✍️

Among solids metal are the good conductors of electricity. In a metal atom of you electrons are not attracted as strongly to the nucleus as the other electrons and are loosely bound to the atom.


When metal atoms form a solid metal atoms can move only short distances. However the electrons that are loosely bound to the atoms can move easily in the solid piece of metal. These electrons are called free electrons' or' conduction electrons. Among non metallic solids, graphite is good conductor of electricity.


In an insulator, the electrons are bound tightly in the items that make up the insulator and therefore cannot move easily. Thus,Insulators are poor conductors of electricity.


The charged particles which flow in a particular direction to produce electric current are called current careers. In solid conductors current careers are free electrons.

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@adityaprakash0574

Answer 2

$\huge \sf\purple {Question :-}$

explain the conductivity in solids.

$\huge \sf\purple {Answer :-}$

$\huge \rightarrow$ The (electrical) conductivity of a material represents how easily charges will flow through the material.

$\huge \red\star$Materials with high conductivity are called conductors.

$\huge \red\star$Materials that do not readily conduct electricity are called insulators.

$\huge \rightarrow$Solids have varying degrees of conductivity i.e. all solids do not have uniform electrical properties.

$\huge \rightarrow$Electrical conductivity in metals is due to the presence of mobile electrons.

$\huge \red\star$ The conductivity of metals is of the order of 107(Ωm)-1.

$\huge \red\star$There is no gap between the conduction band and the valence band.

$\huge \red\star$Thus, electrons can easily flow from the valence band to the conduction band under the influence of electric field, making them good conductors of electricity.

$\huge \rightarrow$The conductivity of the semiconductors increases with an increase in temperature, for semiconductors, it lies in between 10-6 to 10-4 (Ωm)-1.