Chemistry - Complete Pblock- Question with Solution | TestHub

${\mathrm{SiO}}_4^{4-}$ units polymerize to form silicates because Si atom has more tendency to form $\mathrm{p}\pi -\mathrm{p}\pi$ bonds with 'O' atom.

${\left({\mathrm{Si}}_2{\mathrm{O}}_5\right)}_{\mathrm{n}}^{2\mathrm{n}-}$ is general formula for sheet silicates.

Silica exist in form of $\mathrm{O}=\mathrm{Si}=\mathrm{O}$ (linear shape)

${\mathrm{Be}}_3{\mathrm{Al}}_2{\mathrm{Si}}_6{\mathrm{O}}_{18}$ is an orthosilicate.