Which among the following is a poor conductor of heat?

Concept:

• Conductors are the types of materials that allow an electric current to pass through them.
• It has a magnetic field which also stores the energy.
• Electrons can move freely and the thermal conductivity is very low with a weak covalent bond.
• They have very low resistivity.
• It has a positive temperature coefficient.
• It has an empty valence bond.
• Example:- Silver, copper, aluminium, iron, etc

Insulator:

• Insulators are the materials or substances which do not allow the electric current or any energy to pass through them.
• Its magnetic field doesn't store any energy.
• Electrons do not move freely.
• It has very low thermal conductivity while it has a high value of resistivity.
• It contains strong covalent bonds.
• It has a negative temperature coefficient.
• Example:- Rubber, wood, paper, glass, etc.

Explanation

• Mercury is a liquid at room temperature and it has poor conductivity as compared with the metals like silver, aluminium and copper which are good conductors.