Question

Sheet-like silicates are formed by sharing of 3 oxygen atoms of each $Si{O}_4$ tetrahedra. The general formula of the anion in sheet structure is___________.

• A. ${\left(S{i}_6{O}_{18}\right)}^{12-}$
• B. ${\left(S{i}_3{O}_9\right)}^{6-}$
• C. ${\left(S{i}_2{O}_5^{2-}\right)}_n$
• D. ${\left(S{i}_2{O}_3^{2-}\right)}_n$

Answer 1

The correct option is C ${\left(S{i}_2{O}_5^{2-}\right)}_n$

Formula for sheet silicate is ${\left(S{i}_2{O}_5^{2-}\right)}_n$ as shown in figure.