The structure of SiO2 ?
Different forms of silica such as quartz, tridymite and cristobalite are as follows: Quartz 870∘C⟶ Tridymite 1470∘C⇌ Cristobalite
(SiO2) (SiO2) (SiO2)
The structure possessed in them is:
Among Al2O3, SiO2, P2O3, and SO3 , the correct order of acid strength is: