The structures of quartz, mica, asbestos have the common basic unit of-
A
(SiO4)4−
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B
(SiO3)2−
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C
(SiO4)2−
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D
(Si3O2)2−
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Solution
The correct option is A(SiO4)4− Quartz, mica and asbestos are different type of silicates but all these share common basic unit, SiO4−4. Such tetrahedral units (SiO4−4) are linked together in different ways to give, chains, rings, sheets and three dimensional network.