Manipal MET2016Chemistryp Block Elements (Group 13 & 14)
Which of the following anions is present in the chain structure of silicates?
Options
- A( Si ₂ O ₅²⁻ )_n
- B( Si ₂ O ₃²⁻ )_n
- CSi ₂ O ₄⁴⁻
- DSi ₂ O ₇⁶⁻
Correct answer
B. ( Si ₂ O ₃²⁻ )_n
Step-by-step solution
In ( Si ₂ O ₃²⁻ )_n two oxygen atoms per SiO ₄ tetrahedron are shared giving polymeric anions chain. e.g. Spodumene, LiAl ( SiO ₃ )₂ and diposide, CaMg ( SiO ₃ )₂ .