Question

$(Si{O}_3{)}_n^{2n^{-}}$ may be the empirical formula of:

• A. Cyclic silicates
• B. Pyro silicates
• C. Chain silicates
• D. both a and c

Answer 1

The correct option is A Cyclic silicates

Cyclic silicates contain $(Si{O}_3{)}_n^{2n^{-}}$ or $(Si{O}_3^{2-}{)}_n$ ions which are formed by linking three or more tetrahedral $Si{O}_4^{4-}$ units cyclically. Each unit shares two oxygen atoms with other units.
for example-