Name of the structure of silicates in which three oxygen atoms of [SiO4]4−are shared -
Options:
A .  Pyrosilicate
B .  Sheet silicate
C .  Linear chain silicate
D .  Three dimensional silcate
Answer: Option B : B (i) In such silicates, three oxygen atoms of each tetrahedra are shared with adjacent SiO4−4 tetrahedra. (ii) such sharing forms two dimensional sheet structure with general formulae (Si2O5)2−2 as shown below
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