Question

What is conductivity?

Answer 1

The degree to which a specified material conducts electricity, calculated as the ratio of the card density in the material to the electric field that causes the flow of current. It is the reciprocal of the resistivity.

Answer 2

Conductivity is a metal conduct heat and electricity well.

• Delocalized electrons = easy electron movement.
• Moving electrons carry current, thermal energy.
• More valence electrons, larger atomic radius = higher conductivity.

Metals are malleable, ductile, and exhibit luster.

• Delocalized electrons = easy to deform metal.
• Easy electron movement = "flexible" bonds.
• Metals = malleable and ductile instead of brittle.
• Movement of electrons between bands = shiny, metallic luster.
• Oscillation of electrons between bands emits light.

Hope this helps!