Question

Which of the following pairs of metals are poor conductors of heat?
(1) Gallium and Caesium
(2) Lead and mercury
(3) Copper and silver
(4) Iron and lead

Answer 1

Lead and mercury are poor conductors of heat

Option (2)

Explanation:

The 'heat' is directly transferred 'from one particle to another particle' due to 'vibrations in the process of conduction'. But in case of 'mercury and lead', the 'heat don't get changed from one particle to another' directly as compare to other materials.

• 'Mercury' is used to measure the 'room temperature'
• They are not reactive
• Mercury is a liquid metal
• We know that lead lies at '14 Group' it means as the 'metallic character decreases' than the 'energy would also decreases'
• So 'Lead' is a 'poor conductor of heat' but 'not electricity'.
• 'Mercury' is used in 'bulb' also but 'it depend upon its temp'

To know more

Why are lead and mercury harmful to our body?

https://brainly.in/question/258764

Write the symbols of gold, silver,lead and mercury​

https://brainly.in/question/9075931

Answer 2

Lead and mercury are poor conductors of heat

Option (2)

Explanation:

The 'heat' is directly transferred 'from one particle to another particle' due to 'vibrations in the process of conduction'. But in case of 'mercury and lead', the 'heat don't get changed from one particle to another' directly as compare to other materials.

'Mercury' is used to measure the 'room temperature'

They are not reactive

Mercury is a liquid metal

We know that lead lies at '14 Group' it means as the 'metallic character decreases' than the 'energy would also decreases'

So 'Lead' is a 'poor conductor of heat' but 'not electricity'.

'Mercury' is used in 'bulb' also but 'it depend upon its temp'

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