A safe and more reliable method for drying the crystal is__________________?
Correct answer: D. Vacuum desiccator
- A. Hot air currents
- B. folds of filter paper
- C. oven
- D. Vacuum desiccator
Explanation
A vacuum desiccator removes moisture at low pressure without exposing crystals to strong heating, so it is safer for heat-sensitive products and reduces contamination. Hot air or an oven may decompose or alter some crystals, while filter paper can leave residual moisture. The likely alternative is an oven because it dries quickly, but rapid heating can damage the product.
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About Crystalline Solids
Crystalline solids contain particles arranged in a regular repeating lattice described by a unit cell. Their study includes coordination number, packing efficiency, density, anisotropy, cleavage, polymorphism and common crystal systems, along with ionic, molecular, covalent network and metallic crystals. Crystalline order differs from the random arrangement of amorphous solids.
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