Name the structure of silicates in which only one oxygen atom of [SiO4]− are shared:
If we consider [SiO4]− units,
Pyrosilicate is the structure with just the one oxygen atom shared.
Linear chain silicates have 2 oxygen atoms shared. Sheet silicate is the one where 3 oxygen atoms are shared. If all the four oxygen atoms if the [SiO4]− units are shared – they are called three-dimensional silicates.