Question

write the properties of Ionic crystals ​

Answer 1

Answer:

Ionic crystals are hard, have high melting points, and are brittle. When they melt, the resulting liquids conduct electricity well. These properties reflect the strong attractive forces between ions of opposite charge as well as the repulsions that occur when ions of like charge are placed near each other.

Explanation:

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Answer 2

Answer:

Ionic crystals have the following characteristics :

i. The constituent particles of ionic crystals are charged ions. The cations and anions may differ in size.

ii. Each ion of a given sign of charge is bonded to ions of opposite charge around it by coulomb force. In other words, the particles of ionic crystals are held by electrostatic force of attraction between oppositely charged ions.

iii. Ionic crystals are hard and brittle. They have high melting points.

iv. These are nonconductors of electricity in solid state. However, they are good conductors when melted or dissolved in water.

For example : $\sf{NaCl,\: K_2SO_4,\: CaF_2,\: KCl}$ are ionic crystals.