Question

The basic structural unit of feldspar, zeolites, mica, and asbestos is :

• A. $(SiO_{3})^{2-}$
• B. $SiO_{2}$
• C. $(SiO_{4})^{4-}$
• D.

Answer 1

Answer: (C)

Fledespar - $KAlSi _3 O _8- NaAlSi _3 O _8- CaAl _2 Si _2 O _8$
Zeolites - $NaAlSi _2 O _6 \cdot H _2 O$
mica $- KAl _3 Si _3 O _{10}( OH )_2$
asbestos $- Mg _3 Si _2 O _5( OH )_4$
These all are silicates having basic unit $\left( SiO _4\right)^{4-}$