Question

# Name the structure of silicate in which three oxygen atoms of $$[SiO_4]^{4-}$$ are shared :

A
pyrosilicate.
B
sheet silicate.
C
linear chain silicate.
D
three dimensional silicate.

Solution

## The correct option is B sheet silicate.Two dimensioanl sheet silicates: In such silicates, three oxygen atoms of each tetrahedral are shared with adjacent $$SiO^{4-}_4$$ tetrahedral, such sharing forms two dimensional sheet strtucre with general formula $$(Si_2O_5)^{2n-}_n$$Ex. Talc $$Mg(Si_2O_5)_2Mg(OH)_2$$The structure of silicates has been found with the help of X-ray diffraction techniques. Hence,option B is correct.Chemistry

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