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Explain how to obtain hydroxides of alkaline earth metal elements ? Also discuss properties of these hydroxides. |
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Answer» Solution :Oxides of alkaline earth metals react with water to form sparingly SOLUBLE hydroxides. `MO+H_(2)O to M(OH)_(2)` The SOLUBILITY, thermal stability and the basic character of these hydroxides increase with increasing atomic number from `Mg(OH)_(2)` to `Ba(OH)_(2)`. The alkaline earth metal hydroxides are, however, less basic and less stable than alkali metal hydroxides. BERYLLIUM hydroxide is amphoteric in nature as it reacts with acid and alkali both. `Be(OH)_(2)+2HO^(-) to underset("Beryllate ion")([Be(OH)_(4)]^(2-))` `Be(OH)_(2)+2HCL +2H_(2)O to [Be(OH)_(4)]Cl_(2)` |
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