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Date: 13-11-2018
1157
Date: 1-4-2019
1150
Date: 24-10-2018
1192
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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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علامات بسيطة في جسدك قد تنذر بمرض "قاتل"
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أول صور ثلاثية الأبعاد للغدة الزعترية البشرية
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مدرسة دار العلم.. صرح علميّ متميز في كربلاء لنشر علوم أهل البيت (عليهم السلام)
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