Q. Which of the following anions is present in the chain structure of silicates?
A) (Si₂O₅²⁻)ₙ
B) (SiO₃²⁻)ₙ
C) SiO₄⁴⁻
D) Si₂O₇⁶⁻
Explanation
[Solution from source] Single-chain silicates (pyroxenes) share two oxygens per SiO₄ tetrahedron, giving the repeating unit (SiO₃²⁻)ₙ. (Si₂O₅²⁻)ₙ is the sheet silicate unit, SiO₄⁴⁻ is the orthosilicate and Si₂O₇⁶⁻ the pyrosilicate. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.