What material has the best conductivity and what is the best conductivity?

Gold, silver, copper, and aluminum, but because the first two kinds of ** are too expensive, only copper can be used in ordinary industrial applications, so in ordinary applications, copper is basically the best conductive material.

Active from strong to weak: cs, ba, k, ca, mg, al, mn, ni, co, fe, pb, h, cu, au

I don't talk about the first few sorts, there are textbooks, and I also said it upstairs. Fe, Co, and Ni are all group 8 elements, and their physical properties are extremely similar, and the chemical properties are judged to be who has more electrons outside the nucleus, who is relatively more unstable and volatile electrons, so it is Ni>Co>Fe

Finally, why is MN more lively than fe, co, ni? According to the information given in the daily questions, it is speculated that Mn has Mn2O7(+7) valence compounds, while Fe only has (+6) valence compounds at most, so the activity of Mn is relatively stronger than that of Fe, Co, and Ni

Pb is a special case, so the textbook gives the result of its activity, although it is the fourth main group element, but its most stable oxide is not +4-valent PBO2, but +2-valent PBOs

However, in middle school, there is no need to study the activity of subgroup elements, just memorize the order table of metal activity and understand the periodic rate of the elements.

Silver has the best electrical conductivity, followed by copper and gold again.

Conductive properties of different substances.

From front to back, silver, copper, gold, aluminum, tungsten, nickel, iron, platinum.

The ability of an object to conduct an electric current is called conductivity. The conductivity of various metals varies, and generally silver has the best electrical conductivity, followed by copper and gold. Conductivity in solids refers to the long-distance migration of electrons or ions in solids under the action of an electric field, usually dominated by one type of charge carrier.

Such as: electronic conductor, conduction with electron carriers as the main body; ionic conduction, conduction with ion carriers as the main body; Hybrid conductors with both carrier electrons and ions. In addition, some electrical phenomena are not caused by carrier migration, but are caused by solid polarization induced by electric fields, such as dielectric phenomena and dielectric materials.

Non-conductive:

The difference between metals and non-metals: Metals are chemically connected by metallic bonds, while non-metals are connected by ionic bonds or covalent bonds. From the physical property point of view, metals are generally electrically conductive, thermally conductive, malleable, metallic luster, and most of them are solids, only mercury is liquid at room temperature.

Non-metals are mostly insulators, and only a few non-metals are conductors (carbon) or semiconductors (silicon).

However, due to the rapid development of science and technology, the difference between them is becoming less and less obvious. The development of nanotechnology has made the distinction between metals and non-metals smaller and smaller.

Silver and copper are the best in their ability to conduct electricity.

Generally speaking, metal semiconductors and so on are electrically conductive.

, not electrolytes.

The ability of an object to conduct electricity depends on its specific electronic fiber structure and crystal structure. Suppose there are free electrons in a metal.

The larger the quantity, the better the conductivity. Generally speaking, the number of free electrons in non-metals is relatively small, so the conductivity is also weak, which is caused by their different structures. Of course the conductivity and cross-section of the metal, the resistivity.

And so on, these are the points discussed above in physics.

In life, the conductivity of silver and copper is the best, but according to the scarcity of resources, the amount of copper resources stored on the earth is much less than that of aluminum, so considering the total total factors, people will use aluminum to make conductive wires. Aluminum is a resource that also has many advantages, such as a lot of storage, and it is also a light metal, which can be used for a longer time if it is handled well, and copper is relatively heavy, which is generally only used in electrical materials.

Although silver has the strongest electrical conductivity, it is malleable because of its high cost.

It's not as good as copper, so silver is generally not used. Although gold is also conductive, it is also a relatively expensive one, which is not used in daily electrical appliances, such as mobile phone chips.

Wait for the gold to be used, mainly because the gold is relatively stable.

At present, it is known that graphene can be widely used for civilian use. There are also many superconductors whose resistance is infinitely close to 0 at certain temperatures.

Commonly used metal materials for conductivity are gold, silver, copper, iron, tin, aluminum, etc., which are easy to conduct electricity.

Ions in acid, alkali, and brine solutions are easy to conduct electricity; Ionic compounds.

The solution conducts electricity; Ionic compounds conduct electricity after melting tung numbers, and metals and graphite are the most common types of conductors.

In general, metals, semiconductors, electrolyte solutions.

Or molten electrolytes and some non-metals can conduct electricity.

MetalsElectrical conductivityThe order in which they can be ranked from strongest to weakest is:

Silver, copper, gold, aluminum, nickel, steel, lead, magnesium, zinc, molybdenum, yttrium, tungsten, cobalt.

The reason is related to the metallic bonds of the individual elements.

Relate. In other words, the stronger the metal bond, the more conductive the slag wheel is.

Silver has the best electrical conductivity, followed by copper and gold again.

Conductive materials are:

1. Commonly used materials.

Commonly used metal conductive materials can be divided into: metal elements.

Alloys (copper alloys.

Aluminum alloys, etc.), clad metals and other special purpose conductive materials that do not have the main function of conductivity 4 categories: metal elements, alloys, composite metals, special functional conductive materials.

2. Composite materials.

Composite polymer conductive materials, composed of general-purpose polymer materials with various conductivity.

Substances are prepared by filling compounding, surface compounding or layering compounding. The main varieties are conductive plastics, conductive rubber, conductive fiber fabrics, conductive coatings, conductive wax adhesives and transparent conductive thin Changhu films.

Its performance has a great relationship with the type, dosage, particle size and state of conductive fillers and their dispersion state in polymer materials. Commonly used conductive fillers are nickel-coated graphite powder and nickel-coated carbon fiber.

Carbon black, metal powder, metal foil, metal fiber, carbon fiber, etc.

3. Structural materials.

Structural polymer conductive materials refer to polymer materials that have conductive functions after the polymer structure itself or after doping. According to conductivity.

The size of the resistance can be divided into polymer semiconductors, polymer metals and polymer superconductors.

According to the conductive mechanism, it can be divided into electronic conductive polymer materials and ionic conductive polymer materials.

The structural characteristics of electronic conductive polymer materials are that they have a linear or surface large conjugated system, which conducts electricity through the activation of conjugated electrons under the action of heat or light, and the conductivity is generally in the range of semiconductors. The use of doping technology can greatly improve the electrical conductivity of such materials. If a small amount of iodine is doped in polyacetylene, the conductivity can be increased by 12 orders of magnitude.

Become a polymer metal.