Question

In which of the following structure, the number of shared oxygen atom per tetrahedron is two and half ?

• A. 2D silicate
• B. 3D silicate
• C. Amphibole
• D. Ortho silicate

Answer 1

The correct option is C Amphibole

B) In 3D silicates, all the four oxygen atoms of a tetrahedra are shared.
C) In amphibole, the number of shared oxygen atom per tetrahedron is two and half.
D) In orthosilicates the tetrahedra are discrete and oxygen atoms are not bonded to another silicon atom.