Are there loosely bound electrons in insulators?
In electrical insulators electrons are not able to move freely.
Materials in which the electrons are loosely bound are called conductors.
Metals are generally not good insulators because the highly mobile "sea" of loosely bound electrons makes them electrically and thermally conductive.
Insulators, and Dielectrics
The alkali metals
No. The best conductors are metals (esp copper), which have loosely bound electrons.
Because they are bound loosely
Their electrons are bound, not free to travel and conduct electricity.
Electrons of metals are very loosely bound and tend to "float" among the various atoms. This causes the high electrical conductivity of metals. This bond is called a metallic bond.
Good conductors tend to have lots of loosely-attached electrons that can move about, whereas poor conductors (insulators) have electrons bound up in tight bonds. Electrons in excellent conductors such as metals exist almost as a kind of fluid that flows past the atoms themselves.
The loosely bound electrons in each atom's outer shell.
Yes!! That is why they do not allow any form of energy to penetrate into the insulator.
In a conductor, electric current can flow freely, in an insulator it cannot. Metals such as copper typify conductors, while most non-metallic solids are said to be good insulators, having extremely high resistance to the flow of charge through them. "Conductor" implies that the outer electrons of the atoms are loosely bound and free to move through the material. Most atoms hold on to their electrons tightly and are insulators. In copper, the valence electrons… Read More
In a conductor, only one valence electron is loosely bound to the atom. This loosely bound electron breaks easily to make free electrons. As compared to a semiconductor, which is characterized by an atom with four electrons. It is difficult to break an electron like a conductor.
Mercury is a metal, and all metals are good conductors. The reason for this is that they have some electrons that are very loosely bound to the atom, i.e., they can move around quite freely. Mercury is a metal, and all metals are good conductors. The reason for this is that they have some electrons that are very loosely bound to the atom, i.e., they can move around quite freely. Mercury is a metal, and… Read More
An insulator or a dielectric is the generic name for a material which does not allow electrons to flow through it. Many polymers such as PE, PP, PVC etc are insulators. Ceramics such as hardened clay are also insulators. Others include: glass rubber bakelite oils phosphorus sulfur wool silicone rubbers silicone oils teflon nylon polycarbonate acrylic abs etc. Such materials are insulators. Insulators are materials that don't have free electrons available for the flow of… Read More
Conductors, most metals for example, valence electrons of the atoms can be localized with very little input of energy. Insulators, most non-metals for example on the other hand, offers high resistance to flow electrons through them. In insulators valence electrons of the atoms are tightly bound and therefore at low voltages there is no flow of electrons through them.
Conductors allow electricity to pass through it, insulators don't conduct, it has to do with how tight the electrons are bound to the atom. In the case of a conductor they are loose and in insulators they are tightly bound. A semi conductor is something that conducts from one side, positive electricity can only enter from one side and not the other.
the reason some metals are most reactive than other is that the metal elements with tightly bound electrons are less reactive than those with loosely bound electrons. =)
Metal conductors have very large numbers of free electrons. Free electrons are valence electrons (outer shell electrons) that are loosely-bound to their atoms' nucleii, and free to acts as charge carriers.
It is a metal, with 2 loosely bound valence electrons. Warning beryllium is highly toxic!!!
A conductor. The property that determines whether a material is a conductor or an insulator is how tightly bound the outer shell electrons are. Atoms with loosely bound electrons are good conductors. Three examples of good conductors are gold, silver and copper.
an electron loosely bound to its nucleus is called a free electron.
insulators do not have free electrons
dont know sorry go on google to find the answer
The electrons in their valiance band are loosely bound and generally form a cloud of free conduction band electrons filling the metal.
Conductors allow most, if not all, electricity to pass through it. This is due to "wandering electrons" that aren't tightly bound to the nucleus of the conductor itself. Resistors conduct some, but not all electricity to pass. It somewhat resists it, hence resistors. Insulators do not allow electricity to pass through it due to the electrons being so tightly bound to the nucleus.
The outer shell is the valence electrons and they are very loosely bound to the nucleus - less force by the nucleus on the valence electrons, so valence shell's electrons are exchanged first in any reaction.
Materials carry current because of the way the electrons of the material behave. Current is proportional to the number of electrons. If the electrons are loosely bound on the material then they are available to carry current along the material. Copper is a common metal who's configuration means that the electrons are loosely bound and as such is very good at carrying current. If on the other hand the electrons are tightly packed into the… Read More
Note: Insulator and conductor deal with current. "Electricity" doesn't flow, but is the entire field dealing with all things and phenomenon electrical. Conductors are the materials which have free electrons so these electrons pass as current from one point to another but insulators have no free electrons. Their electrons are bound to their atoms so they can't transfer electrons from one part to another part of the material.
__________ electrons are loosely held to a positive nucleus.
176kcal. -Thanks to castle learning
Insulators usually have 3 or more valence electrons. Conductors usually have 1 or 2 valence electrons.
Typically metals make good conductors because they have much more loosely bound electron clouds than insulators. By the same token, those electron clouds have greater ability to store heat in their elevated energy states than the more tightly bound clouds of insulators. The same is also true of the vibrational energy of the metal nuclei compared to the nuclei of insulators which allow much less vibration and can consequently store less vibrational energy.
Simply put, loosely bound valance electrons. Most conductors have rather " free " ranging electron clouds between many atoms in metalic bonds.
When two oppositely charged metal objects touch which way do electrons transfer Positive to Negative or vice versa?
Electrons are negatively charged particles so they would tend to flow toward the positive electrode if the electrons are loosely bound.
Insulators. Their valence electrons are tightly bound because the valence shell is close to full or full. Since each shell can only only hold a certain amount of electrons, the number of electrons depends on which shell is the outer or valence shell.
Metals have loosely bound electrons in their outer shells. The electrons do not require very strong forces to move them away from the nucleus of their atoms. As a result, weak electric fields can move these electrons freely.
Metals have good conductivity, malleability, ductility, and luster because of the properties of their electrons. The electrons are not tightly bound to any one atom, and thus form a sea of loosely bound electrons around the metal atom cores. This phenomenon occurs because there is overlap between the valence band and the conduction band in metals.
The five thousand million billion freely moving electrons in a penny repel one another why don't they fly out of the penny?
they arent moving freely. they are loosely bound to the nucleus.
Non-metal, because it doesn't have any loosely-bound electrons. Bromine is a halogen, as far away from metals as you can get and still be part of the Periodic Table.
A+ loosely bound the states together
In an insulator electrons cannot move freely.
A valance electron.
Generally electrons, in metal. Specifically loosely-bound electrons from the outer orbital. Or holes, in p-type semiconductor. Or ions, in conducting liquid like battery acid. Or electrons, in a cathode-ray-tube.but i conclude it would be electrons. OR Q-which charges are more free to move in a conductor. A-electrons
Insulators can shield electricity, while conductors help it move. Insulators contain no free electrons to allow the flow of electricity.
Cations are positively charged ions. Metals usually have relatively loosely bound outer electrons. Hence metals are often found as cations in ionic compounds.
Brass is a good conductor of heat and electricity because its valence electrons are so loosely bound that they can float around which makes it very easy to conduct heat
The electrons in their valence band are so loosely bound that in the bulk material they form an "electron gas" that fills the material and can freely flow in response to voltage placed across that material.