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On the basis of nature of constituent particles crystals are classified into four types.

1. Which are they?

2. In which type does diamond belongs to? Why?

3. Can you say whether Iodine can be written as an example of ionic crystal? Why?

1 Answer

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1. Ionic crystals, Molecular crystals, Covalent crystals and Metallic crystals. 

2. Diamond belongs to covalent crystals, because in diamond, the constituent particles are carbon atoms connected by strong covalent bonds. 

3. No. In ionic crystal the constituent particles are ions. Since the constituent particles of iodine are molecules, it is a molecular crystal.

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