Question

Name of the structure of silicates in which three oxygen atoms of $[Si{O}_4{]}^{4-}$ are shared -

• A. Pyrosilicate
• B. Sheet silicate
• C. Linear chain silicate
• D. Three dimensional silcate

Answer 1

The correct option is B

Sheet silicate

(i) In such silicates, three oxygen atoms of each tetrahedra are shared with adjacent $Si{O}_4^{4-}$ tetrahedra.

(ii) such sharing forms two dimensional sheet structure with general formulae $(S{i}_2{O}_5{)}_2^{2-}$ as shown below