Question

Which of the following is basic structure of cyclic silicate?

• A.
• B.
• C.
• D.

Answer 1

Answer: (C), (D)

The correct options are
C

D

What do you mean by cyclic silicates?

These involve silicate tetrahedral in which the $Si{O}_4$ tetrahedra share two oxygen atoms. Only two such ions are known, $S{i}_3{O}_9^{6-}$ and $S{i}_6{O}_{18}^{12-}$.

General structure is

So, (c) and (d) are correct option.

(a) $\to$ Ortho-silicate

(b) $\to$ Pyro-silicate