How many oxygen atoms are expected to be shared by each `SiO_(4)^(4-)` tetrahedra to form a cyclic silicate ion `Si_(3)O_(9)^(6-)`

How many oxygen atoms are expected to be shared by each `SiO_(4)^(4-)`

1.	How many oxygen atoms are expected to be shared by each `SiO_(4)^(4-)` tetrahedra to form a cyclic silicate ion `Si_(3)O_(9)^(6-)`
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How many oxygen atoms are expected to be shared by each `SiO_(4)^(4-)` tetrahedra to form a cyclic silicate ion `Si_(3)O_(9)^(6-)`

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