Question

Which one of the following anions are present in the chain structure of the silicates?

• A. $Si{O}_4^{4-}$
• B. $S{i}_2{O}_7^{6-}$
• C. ${\left(S{i}_2{O}_5^{2-}\right)}_n$
• D. ${\left(Si{O}_3^{2-}\right)}_n$

Answer 1

The correct option is D ${\left(Si{O}_3^{2-}\right)}_n$

Chain structure

Single chain $\left({Si{O}_3}^{2-}\right)n$ $Si:O⟶1:3$

Double chain $\left({S{i}_4{O}_{11}}^{6-}\right)n$ $Si:O⟶4:11$

Silicate sheet $\left({S{i}_2{O}_5}^{2-}\right)n$.

Thus, the anions present in the chain structure of the silicate is $(Si{O}_3^{2-}{)}_n$