________ is the best conductor of heat

The Correct Answer is Silver.

Key Points

• Lead (Pb):
  • The atomic number is 82.
  • It is a soft, highly malleable, ductile, and a relatively poor conductor of electricity.
  • It is very much corrosion resistant.

Additional Information

• Silver (Ag):
  • The atomic number is 47.
  • It is a soft, white, and lustrous metal.
  • It is a very ductile and malleable metal and has the highest electrical conductivity, thermal conductivity of all elements i.e best conductor of heat.
  • It is most widely used for electrical cables and wirings.
• Mercury (Hg):
  • The atomic number is 80.
  • It is the only metal liquid at standard temperature and pressure.
  • It is also known as Quicksilver.
  • Mercury has a relatively high vapour pressure and the highest volatility of any metal.
  • It is used in making batteries, thermometers, and barometers, etc.
  • It is a good conductor of heat.
• Stainless steel:
  • It is an alloy of Iron and Chromium with a minimum of 10% among other alloying elements.
  • It is resistant to corrosion.
  • Stainless steels have a much lower conductivity than that of carbon (mild) steel.

Confusion Point

•  Silver(Ag) is the best conductor of heat and electricity.