SSC MTS EXAM

Detailed explanation-1: -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.

Detailed explanation-2: -The structure and bonding of metals explains their properties : They are electrical conductors because their delocalised electrons carry electrical charge through the metal. They are good conductors of thermal energy because their delocalised electrons transfer energy.

Detailed explanation-3: -Metals are good conductors of electricity because they possess free electrons. These free electrons help in the flow of current through the conductor.

Detailed explanation-4: -The particles are close together and in a regular arrangement. Metals atoms have loose electrons in the outer shells, which form a ‘sea’ of delocalised or free negative charge around the close-packed positive ions. These loose electrons are called free electrons. They can move freely throughout the metallic structure.