Silver - Silver is the best conductor of electricity because it contains a higher number of movable atoms (free electrons).
Gold -Gold is a very good conductor of electricity.
Even though copper and silver are better conductors than gold, gold retains its conductivity longest because it does not tarnish or corrode easily. ... Gold also makes great wiring because it is very ductile and can be drawn extremely thin.
Copper -Each copper atom has lost one electron and become a positive ion. ... The electrons can move freely through the metal. For this reason, they are known as free electrons. They are also known as conduction electrons, because they help copper to be a good conductor of heat and electricity.
Aluminum -Aluminum is a good conductor because it is a metal. In metals, the valence electrons are already detached due to the metallic bonds between atoms. We call these electrons that break the bond with their atom free electrons. They easily start moving whenever charge is applied to the metal.
Mercury -Mercury is a poor conductor of heat, but a fair conductor of electricity. Mercury has a unique electron configuration which strongly resists removal of an electron, making it behave similarly to noble gas elements. As a result, mercury forms weak bonds and is a liquid at room temperature.
Steel -Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions.
Iron -Iron has metallic bonds which is where the electrons are free to move around more than one atom. This is called delocalization. Because of this, iron is a good conductor.
Seawater -Sea water has a relatively large number of Sodium and Chloride ions and has a conductivity of around 5S/m. This is because the Sodium Chloride salt dissociates into ions. Hence sea water is about a million times more conductive than fresh water.
Concrete -Moist concrete retains water within it's pores which makes it a much better conductor of electricity. So in other words, when concrete is wet or damp, it changes and becomes a much better conductor. Concrete is made up of chemical components that have free ions. Concrete conducts electricity through these ions.
Platinum -The number of valence electrons in an atom is what makes a material able to conduct electricity. ... Metals that have ONE valence electron are copper, gold, platinum, and silver. Iron has two valence electrons. Even though Aluminum has three valence electrons, it is an excellent conductor as well.
Brass -Brass however – which contains copper – is far less conductive because it is made up of additional materials that lower its conductivity, making it unsuitable for electrical purposes. ... Another common misconception is that pure Gold is the best conductor of electricity.
Bronze - Bronze is a better conductor of heat and electricity than most steels. The cost of copper-base alloys is generally higher than that of steels but lower than that of nickel-base alloys. ... Bronze is usually nonmagnetic, but certain alloys containing iron or nickel may have magnetic properties.
Graphite -In a graphite molecule, one valence electron of each carbon atom remains free. Due to the free electrons in its framework, graphite can perform electricity. Therefore, graphite is said to be a good conductor of electricity.
Dirty water -Because it contains some dissolved calcium and magnesium salts, which are good conductors of electricity.
Lemon juice -Lemon juice contains citric acid. Because acids break up into charged anions and cations when dissolved in water, they conduct electricity because the charged particles are able to flow within the acid.
Explanation:
A conductor is a material which contains movable electric charges. In metallic conductors, such as copper or aluminum, the movable charged particles are electrons, though in other cases they can be ions or other positively charged species.
Answers & Comments
Answer:
Silver - Silver is the best conductor of electricity because it contains a higher number of movable atoms (free electrons).
Gold - Gold is a very good conductor of electricity.
Even though copper and silver are better conductors than gold, gold retains its conductivity longest because it does not tarnish or corrode easily. ... Gold also makes great wiring because it is very ductile and can be drawn extremely thin.
Copper - Each copper atom has lost one electron and become a positive ion. ... The electrons can move freely through the metal. For this reason, they are known as free electrons. They are also known as conduction electrons, because they help copper to be a good conductor of heat and electricity.
Aluminum - Aluminum is a good conductor because it is a metal. In metals, the valence electrons are already detached due to the metallic bonds between atoms. We call these electrons that break the bond with their atom free electrons. They easily start moving whenever charge is applied to the metal.
Mercury - Mercury is a poor conductor of heat, but a fair conductor of electricity. Mercury has a unique electron configuration which strongly resists removal of an electron, making it behave similarly to noble gas elements. As a result, mercury forms weak bonds and is a liquid at room temperature.
Steel - Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions.
Iron - Iron has metallic bonds which is where the electrons are free to move around more than one atom. This is called delocalization. Because of this, iron is a good conductor.
Seawater - Sea water has a relatively large number of Sodium and Chloride ions and has a conductivity of around 5S/m. This is because the Sodium Chloride salt dissociates into ions. Hence sea water is about a million times more conductive than fresh water.
Concrete - Moist concrete retains water within it's pores which makes it a much better conductor of electricity. So in other words, when concrete is wet or damp, it changes and becomes a much better conductor. Concrete is made up of chemical components that have free ions. Concrete conducts electricity through these ions.
Platinum - The number of valence electrons in an atom is what makes a material able to conduct electricity. ... Metals that have ONE valence electron are copper, gold, platinum, and silver. Iron has two valence electrons. Even though Aluminum has three valence electrons, it is an excellent conductor as well.
Brass - Brass however – which contains copper – is far less conductive because it is made up of additional materials that lower its conductivity, making it unsuitable for electrical purposes. ... Another common misconception is that pure Gold is the best conductor of electricity.
Bronze - Bronze is a better conductor of heat and electricity than most steels. The cost of copper-base alloys is generally higher than that of steels but lower than that of nickel-base alloys. ... Bronze is usually nonmagnetic, but certain alloys containing iron or nickel may have magnetic properties.
Graphite - In a graphite molecule, one valence electron of each carbon atom remains free. Due to the free electrons in its framework, graphite can perform electricity. Therefore, graphite is said to be a good conductor of electricity.
Dirty water - Because it contains some dissolved calcium and magnesium salts, which are good conductors of electricity.
Lemon juice - Lemon juice contains citric acid. Because acids break up into charged anions and cations when dissolved in water, they conduct electricity because the charged particles are able to flow within the acid.
Explanation:
A conductor is a material which contains movable electric charges. In metallic conductors, such as copper or aluminum, the movable charged particles are electrons, though in other cases they can be ions or other positively charged species.