Question

Name of the structure of silicates in which three oxygen atoms of $[Si{O}_4{]}^{4+}$ are shared is :

• A. pyro-silicate.
• B. sheet silicate.
• C. linear chain silicate.
• D. three dimensional silicate.

Answer 1

The correct option is B sheet silicate.

The structure of silicates has been found with the help of X-ray diffraction techniques

In sheet silicates, out of four oxygen atoms of $[Si{O}_4{]}^{4+}$, three atoms are shared.

This gives two dimensional molecules of the composition $(S{i}_2{O}_5{)}_n^{2n-}$.

They form layer structure.

Examples include mica or muscovite and Talc.