Metals are the good conductor of heat because
By BYJU'S Exam Prep
Updated on: September 25th, 2023
1. They contain free electron.
2. Their atoms are relatively far apart.
3. Their atoms collide frequently.
4. They have high density.
The elements that are hard, lustrous, malleable, ductile, sonorous and good conductors of heat and electricity are called metals. Gold and Silver are the most malleable metals. Its hardness varies from metal to metal.
Table of content
Answer: Metals are good conductors of heat because they contain free electrons.
The atoms in metals are densely packed and can transmit heat more rapidly. Copper and Silver are the best conductors of heat. On the other hand, Lead and Mercury possess poor conductivity of heat. Mercury is the only metal that is liquid at room temperature. Generally, metals have a high melting point but gallium and caesium have a low melting point.
More details on Metals
Following are the crucial details on metals:
-
Alkali metals like lithium, sodium, potassium can be cut with knife because they are so soft.
-
Most of the metals give rise to basic oxides.
-
Generally, metal oxides are insoluble in water but some metals dissolve in water to form alkalis.
-
The metal oxides which react with both acids as well as bases to produce salts and water are known as amphoteric oxides.
-
Metals like potassium and sodium are kept immersed in kerosene oil because they react so vigorously that they catch fire if kept in the open.
Summary:
Metals are the good conductor of heat because
Out of the given options, the correct answer is ‘They contain free electron’.
