Question

Wollastonite, $C{a}_3\left(S{i}_3{O}_9\right)$ has

• A. One oxygen atom shared per tetrahedron
• B. Two oxygen atoms shared per tetrahedron
• C. Three oxygen atoms shared per tetrahedron
• D. Four oxygen atoms shared per tetrahedron

Answer 1

The correct option is B Two oxygen atoms shared per tetrahedron

$S{i}_3{O}_9^{6-}$ is a cyclic silicate. In $C{a}_3\left(S{i}_3{O}_9\right)$, each tetrahedron shares two oxygen atoms.