Question

Electrical conductance through metals is called metallic or electronic conductance and is due to the movement of electrons. The electronic conductance depends on:

• A. the nature and structure of the metal
• B. the number of valence electrons per atom
• C. change in temperature
• D. all of these

Answer 1

The correct option is D all of these

Electronic conductance depends upon-

• Nature of electrolyte : The conductance of an electrolyte depends upon the number of ions present in the solution. Therefore, the greater the number of ions in the solution the greater is the conductance.
  
• Concentration of the solution : The molar conductance of electrolytic solution varies with the concentration of the electrolyte. In general, the molar conductance of an electrolyte increases with decrease in concentration or increase in dilution.nature of the
  
• Temperature : The conductivity of an electrolyte depends upon the temperature. With increase in temperature, the conductivity of an electrolyte increases.
  
• Valence electrons per atom present in metals describes the electric conductance of it.
  
• Nature and structure is also a significant factors which influences electrical conductance.