Question

In which of the following silicates, only two corners per tetrahedron are shared ?

(i) Pyro silicate
(ii) Cyclic silicate
(iii) Double chain silicate
(iv) Single chain silicate
(v) 3D silicate
(vi) Sheet silicate

• A. (i), (ii) and (V)
• B. (iv) and (vi) only
• C. (ii) and (iv) only
• D. (i) and (vi) only

Answer 1

The correct option is C (ii) and (iv) only

(i) pyro silicates : 1 corner O-atom per tetrahedron is shared
(ii) Cyclic silicates : 2 corner O-atoms per tetrahedron is shared
(iii)Double chain silicates: One unit shares two corner O-atoms while one unit shares three corner O-
atoms
(iv) Single chain silicate : 2 corner O-atoms are shared
(v) 3D silicate : 4 corner O-atoms are shared
(vi) Sheet silicates : 3 corner O-atoms are shared