Maharashtra BoardEnglish MediumSTD 12 ScienceChemistrySolid State3 Marks
Question
What are the characteristics of ionic crystals ?
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Answer
The characteristics of ionic crystals are as follows:
1. The constituents of ionic crystals are charged ions namely cations and anions. They differ in ionic size. 2. The ions in these crystals are held by strong electrostatic force of attraction. 3. Ionic crystals have high melting points and they are hard and brittle. 4. In solid state they are nonconductors of electricity but they are good conductors when melted or dissolved in water. 5. In aqueous solution they dissociate forming ions. 6. Example : $NaCl , KCl . CaF _2, K _2 SO _4$, etc.
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