Question

Which of the following anions is present in the chain structure of silicates?

• A. $\left(\right.Si_{2}O_{5}^{2 -}\left.\right)$
• B. $\left(\right.SiO_{3}^{2 -}\left.\right)$
• C. $SiO_{4}^{4 -}$
• D. $Si_{2}O_{7}^{6 -}$

Answer 1

Answer: (B)

Chain silicates are formed by sharing two oxygen atoms by each tetrahedron. Anions of chain silicate have two general formula
$\left(\right.i\left.\right)\left(\right.SiO_{3}\left.\right)_{n}^{2 n -}$
$\left(\right.ii\left.\right)\left(\right.Si_{4}O_{11}\left.\right)_{n}^{6 n -}$