Answer
Verified
460.8k+ views
Hint: The metals are said to be good conductors of electricity if they allow electricity or electrons to be precise to flow through them easily. The property of conductors which allows them to conduct electricity is called conductivity. Such materials offer less opposition or resistance to the flow of charges.
Complete answer:
For a material to be a good conductor, the electricity passed through it must be able to move the electrons the metal possesses, the freer the electrons are in a metal, the greater will be its conductivity.
Among the given elements silver and gold have a maximum number of electrons. Silver is the best conductor of electricity because it contains a higher number of movable atoms (free electrons) owing to the fact that gold has a preceding f-orbital from the actinide series. These f-orbitals are very densely packed and are nearer to nucleus compared to even d-orbitals (silver, transitional metals) and they tend to hold back the electrons restricting the easy flow of current through them.Thus the valence shells and crystal structure of silver makes it the best conductor of electricity.
Also, the correct order of the conductivity in the given elements is given below: \[Silver>Gold>Nickel>Sodium\]
So, the correct answer is “Option B”.
Note: Even though silver is the best conductor of electricity, there are two reason why silver is not used very frequently over other conductors: 1) it is a very precious metal and thus has a high price for the amount of material used and 2) It corrodes or oxidizes easily as it has good affinity towards oxygen. Copper is hence, \[(Cu)\] is commonly used when oxidation is not a major issue, such as home wiring and in most electric motors.
Complete answer:
For a material to be a good conductor, the electricity passed through it must be able to move the electrons the metal possesses, the freer the electrons are in a metal, the greater will be its conductivity.
Among the given elements silver and gold have a maximum number of electrons. Silver is the best conductor of electricity because it contains a higher number of movable atoms (free electrons) owing to the fact that gold has a preceding f-orbital from the actinide series. These f-orbitals are very densely packed and are nearer to nucleus compared to even d-orbitals (silver, transitional metals) and they tend to hold back the electrons restricting the easy flow of current through them.Thus the valence shells and crystal structure of silver makes it the best conductor of electricity.
Also, the correct order of the conductivity in the given elements is given below: \[Silver>Gold>Nickel>Sodium\]
So, the correct answer is “Option B”.
Note: Even though silver is the best conductor of electricity, there are two reason why silver is not used very frequently over other conductors: 1) it is a very precious metal and thus has a high price for the amount of material used and 2) It corrodes or oxidizes easily as it has good affinity towards oxygen. Copper is hence, \[(Cu)\] is commonly used when oxidation is not a major issue, such as home wiring and in most electric motors.
Recently Updated Pages
Who among the following was the religious guru of class 7 social science CBSE
what is the correct chronological order of the following class 10 social science CBSE
Which of the following was not the actual cause for class 10 social science CBSE
Which of the following statements is not correct A class 10 social science CBSE
Which of the following leaders was not present in the class 10 social science CBSE
Garampani Sanctuary is located at A Diphu Assam B Gangtok class 10 social science CBSE
Trending doubts
A rainbow has circular shape because A The earth is class 11 physics CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Which are the Top 10 Largest Countries of the World?
How do you graph the function fx 4x class 9 maths CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Give 10 examples for herbs , shrubs , climbers , creepers
Change the following sentences into negative and interrogative class 10 english CBSE
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Why is there a time difference of about 5 hours between class 10 social science CBSE