The figure listed below mirrors just a few examples of the color and brilliance of normally emerging ionic crystals. The regular and also orderly setup of ions in the crystal lattice is responsible for the assorted forms of these crystals, while change steel ions give climb to the colors.

You are watching: Which of the following is a characteristic property of ionic compounds

api/deki/files/78206/CK12_Screenshot_8-9-2.png?revision=1" />Figure 3.6.2: (A) The sodium chloride crystal is presented in 2 dimensions. (B) When struck by a hammer, the negatively-charged chloride ions are required close to each various other and the repulsive pressure causes the crystal to shatter.


Anvarious other characteristic home of ionic compounds is their electric conductivity. The figure listed below mirrors 3 experiments in which two electrodes that are connected to a light bulb are placed in beakers containing three different substances.

Figure 3.6.3: (A) Distilled water does not conduct power. (B) A solid ionic compound also does not conduct. (C) A water solution of an ionic compound conducts electricity well.

In the first beaker, distilled water does not conduct a current bereason water is a molecular compound. In the second beaker, solid sodium chloride likewise does not conduct a present. In spite of being ionic and also therefore composed of charged pwrite-ups, the solid crystal lattice does not allow the ions to move between the electrodes. Mobile charged pwrite-ups are forced for the circuit to be finish and also the light bulb to light up. In the third beaker, the NaCl has been liquified right into the distilled water. Now the crystal lattice has actually been broken acomponent and the individual positive and negative ions can move. Cations relocate to one electrode, while anions move to the other, enabling electricity to flow (see figure below). Melting an ionic compound likewise frees the ions to conduct a existing. Ionic compounds conduct an electrical existing as soon as melted or liquified in water. The dissolution of ionic compounds in water will certainly be debated in Section 9.3.

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NaCl(s) → Na+(aq) + Cl–(aq)

Key Takeaways

Ionic compounds have high melting points. Ionic compounds are tough and also brittle. Ionic compounds dissociate right into ions as soon as dissolved in water. Solutions of ionic compounds and also melted ionic compounds conduct electricity, however solid materials do not. An ionic compound can be figured out by its nlinux.orgical formula: metal + nonmetal or polyatomic ions.