Question

Which of the following are not a structures of silicates in which three oxygen atoms of $[Si{O}_4{]}^{4-}$ ?

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

Answer 1

Answer: (A), (C), (D)

The correct options are
A Pyrosilicate
C Linear chain silicate
D Three-dimensional silicate

In sheet silicates, three out of $Si{O}_4^{4-}$ unit are shared as shown below :
In pyrosilicates, three is only one shared oxygen, in linear chain silicates, 3-D silicates, all four oxygens are shared.
Hence correct option is a, c, d.