p-Block Elements-I - Result Question 10-1
10. Name the structure of silicates in which three oxygen atoms of $\left[\mathrm{SiO}_4\right]^{4-}$ are shared is
(2005, 1M)
(a) pyrosilicate
(b) sheet silicate
(c) linear chain silicate
(d) three-dimensional silicate
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Answer:
Correct Answer: 10. (a)
Solution:
- In sheet silicates, three out of four oxygen of $\mathrm{SiO}_4^{4-}$ unit are shared as shown below :
In pyrosilicates, there is only one shared oxygen, in linear chain silicates, two oxygen per tetrahedra are shared while in three-dimensional silicates, all four oxygens are shared.
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