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Question

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


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

354810_218257_ans_f597298896be400394a2c2e675ac4373.PNG

Chemistry

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