MCQ
Which of the following anions is present in the chain structure of silicates ?
  • A
    $(Si_2O_5^{2-})_n$
  • $(SiO_3^{2-})_n$
  • C
    $SiO_4^-$
  • D
    $Si_2O_7^{6-}$

Answer

Correct option: B.
$(SiO_3^{2-})_n$
b
Chain silicates are formed by sharing two oxygen atoms by each tetrahedra. Anions of chain silicate have two general formula:

(i) $\left(5 i 0_{3}^{2}\right)_{n}^{2 n}$

(ii) $\left(5 i_{4} \mathrm{O}_{11}\right)_{n}^{6 n-}$

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