Beryl is
3BeO . 3 Al2O3 . 3SiO2
3BeO. Al2O3. 6SiO2
BeO. Al2O3. SiO2
4Al2O3. 6Be. 10SiO2
Beryl is 3BeO. Al2O3. 6SiO2
Al2O3 can be converted to anhydrous AlCl3 by heating.
Among Al2O3, SiO2, P2O3, and SO3 , the correct order of acid strength is: