Number of oxygen atoms shared per `SiO_(4)^(4-)` tetrahedron in single chain silicates are `"_________________"`.

How many oxygen atoms are shared per SiO_4 tetrahedral in Beryl ?

The number of O-atoms that are shared per SiO_4 tetrahedra in silicate anion of beryl is-

The number of corner of O atom shared per tetrahedron in 2D silicate is_______

Number of corner/oxygen atoms shared per tetrahedron in 3-D silicate and pyroxene silicate are ........and .......respectively-

How many O-atoms are shared per SiO_4 tetrahedral in silicate anion of beryl mineral ?