9/20/2023 0 Comments Carbon metal ion bonding nameThe small beryllium ion at the centre attracts the electrons in the bonds towards itself, and that makes the hydrogen atoms in the water even more positive than they usually are. In the first instance, it reacts to give hydrated beryllium ions, 2+, and chloride ions.īut the hydrated beryllium ions (called tetraaquaberyllium ions) are quite strongly acidic. There must be something more complicated going on!īeryllium chloride reacts vigorously and exothermically with water with the evolution of acidic, steamy hydrogen chloride gas. On the other hand, the melting point is quite high for such a small covalent molecule. The much higher boiling point of magnesium chloride is what you might expect from the strong forces between the positive and negative ions present.īecause its boiling point is much lower, it follows that beryllium chloride can't contain ions - it must be covalent. Notice how much dramatically lower the boiling point of beryllium chloride is compared with magnesium chloride. That compares with 714☌ and 1412☌ for magnesium chloride. īeryllium chloride, BeCl 2, melts at 405☌ and boils at 520☌. This is known as a diagonal relationship and is discussed on the page about electronegativity. In fact, there are several similarities between beryllium and aluminium in Group 3. This page describes and explains three examples from beryllium chemistry where it behaves differently from the rest of Group 2. SOME BERYLLIUM CHEMISTRY UNTYPICAL OF GROUP 2 Chemistry of beryllium untypical of Group 2
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |