1.

The common basic structural unit is silicates and silica is

Answer»

`Si_(2)O_(6)^(4-)`
`SiO_(3)^(2-)`
`SiO_(4)^(4-)`
`Si_(2)O_(7)^(6-)`

Solution :Silica `(Sio_(2))` and SILICATES containj a common structureal, unit `(SiO_(4))^(4-)` in which each SI is surrounded tetrahedrally by FOUR oxygen atoms.


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