Ionic compounds conduct electric current when they are molten because the constituent ions that form the compound appear when the solid form changes phase into the liquid one. The solid structure of the compound, which is generally a crystalline one, comes apart when it melts, and in a way similar to what it does when that compound dissolved in a solvent. This frees the ions, and their mobility means that they can contribute to the movement of electric current. It's just that simple.
Conducting of charge is due to movement of electrons,i.e. if electrons which can move are available then the compound will be good conductor. In case of ionic compounds the molecules of the compound get ionized when dissolved in water or in the molten state giving ions. These ions can conduct the electricity ,hence ionic substances conduct charge.
as ions can exist either in solution or in molten state only, that is why conducting of charge is observed in aqueous state or in molten state .
If a voltage is applied across this molten mass, cations migrate freely to one electrode and anions migrate to the other. This ion movement allows electricity to flow between the electrodes through an external wire. Also the ions are free to move about in the aqueous solution.
Conducting electricity requires spatial motion of at least one kind of charged particle. In most solid ionic compounds, the barriers to motion are too high to be overcome by any but very high electrical fields, and such high fields usually change the chemical nature of the compound. Some ionic compounds can contain impurities that generate more readily moved charges; these are the ionic semiconductors.
In a liquid state, the ions of the ionic compound can move readily because of the much lower energy barriers to motion characteristic of a liquid.
As ionic compounds consist of ions, more precisely cations and anions, and when melted or dissolved in water the bond between ions breaks. Now the ions are separated, and thus have an electric charge (cations have a positive charge and anions a negative one). And as it is, in order for something to conduct electricity, that something must have a way to transfer electic current, which is charged particles (in this context: ions).
And in a nutshell, that's why ionic compounds conduct electricity when melted or in water.
Hope this helps :)
(As to why ionic compounds don't conduct electricity when they're not either melted or in water: ionic compounds bound together produce a compound, which has no charge as a whole therefore, no ways to transfer charges :))
When the ionic compound melts, it ionises. These ions help them to conduct electricity.
becausee it can
Yes they do!! But just in MODERN state!
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Potassium Bromide will conduct electricity only when it is melted or dissolved in water
The compound can be dissolved or melted.
Yes, CaCO3 melt can conduct electricity - both via its cation (Ca2+) and its anion (CO3,2-). Note that this does not apply to the solid form of this ionic salt.
Sodium bromide is an ionic substance. It conducts electricity when melted or when dissolved in water. This is due to the sodium, Na+ ions and the Br- ions present. It does not conduct electricity in the solid state as the ions can not move.
An ionic compound can conduct electricity when it is in solution or melted.
Upon melting, the ions are free to move and conduct electricity.
Upon melting, the ions are free to move and conduct electricity.
Yes, ionic compounds can only conduct electricity when molten or dissolved.
An ionic compound can conduct electricity when it is in solution or melted.
Even insoluble ionic compounds such as CaCO 3 are electrolytes because they can conduct a current in the molten (melted) state.
Ionic compounds are conductors in solution or melted.
In order to conduct electric current, salt has to be either dissolved in a liquid, or else melted in its own liquid form. A pile of dry salt out of the shaker won't do it.
Melting or dissolving ionic compounds increases the electrical conductivity. This is because there are free mobile charged ions that can move in the electric field and conduct current.
No. Solid Sodium Chloride does not conduct electricity, unless is melted or disolved in water.
Ionic compounds are good conductors of electricity when they are melted because the molecules in the compound are spread out further and can create more friction therefore creating an electric current
Melting or dissolving ionic compounds increases the electrical conductivity. This is because there are free mobile charged ions that can move in the electric field and conduct current.