Question

Which silicate structure is characterized by a single chain of \(SiO_{4}\) tetrahedra?

• A. Nesosilicates
• B. Inosilicates (single chain)
• C. Phyllosilicates
• D. Tectosilicates

Hint:

Remember: Neso = isolated, Ino = chains, Phylo = sheets, Tecto = 3D framework.

Answer 1

The Correct Option is B

Concept: Silicate minerals are classified based on how \(SiO_4\) tetrahedra are arranged:

• Nesosilicates: Isolated tetrahedra
• Inosilicates: Chain structures (single or double chains)
• Phyllosilicates: Sheet structures
• Tectosilicates: Three-dimensional framework

Step 1:Understand the meaning of chain structures.
In chain silicates, tetrahedra are linked by sharing oxygen atoms to form continuous chains.
Step 2:Identify the structure with a single chain.
Single-chain structures are a type of inosilicates (e.g., pyroxenes), where each tetrahedron shares two oxygen atoms with adjacent tetrahedra.
Step 3:Select the correct option.
Thus, the silicate structure characterized by a single chain of \(SiO_4\) tetrahedra is inosilicates (single chain).