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Date: 28-10-2018
957
Date: 10-12-2018
1138
Date: 9-1-2018
1128
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group 17 : Clathrates
Dichlorine, dibromine and diiodine are sparingly soluble in water. By freezing aqueous solutions of Cl2 and Br2, solid hydrates of approximate composition X2.8H2O may be obtained. These crystalline solids (known as clathrates) consist of hydrogen-bonded structures with X2 molecules occupying cavities in the lattice. A clathrate is a host–guest compound, a molecular assembly in which the guest molecules occupy cavities in the lattice of the host species.
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دراسة تحدد أفضل 4 وجبات صحية.. وأخطرها
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