Which of the following, in the solid state, would be an example of a molecular crystal? 1. iron 2. diamond 3. none of these 4. carbon dioxide

4. carbon dioxide

Explanation:

Carbon dioxide is a molecular gas in environmental conditions and an important component of the Earth's atmosphere. In addition, it is a probable component of the Earth's mantle and plays an important role in the life cycle.

At high pressure, carbon dioxide can be transformed into a solid, commonly referred to as “dry ice,” a molecular crystal that has many applications such as food production and storage, artificial fog in shows or artificial rain. .

With increasing pressure and varying temperature, intra and intermolecular interactions of carbon dioxide change dramatically. This results in different crystalline structures in dense polymeric phases with interesting physical properties, such as "super hardness."

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