About `95%` of the earth's crust is composed of silicate minerals, alumino silicate clay r silica.
Channel: Doubtnut
Date: 2020-08-23

About `95%` of the earth's crust is composed of silicate minerals, alumino silicate clay r silica. Silicates are classified on the basis of bonding and the metal ions present in them. Some of the common categories of silicates are  (I) orthosilicates , (II) pyrosilicates  (III) cyclic silicates , (IV) chain silicates  (V) amphiboles , (VI) sheet silicates  (VII) three-dimensional network silicates  Which is incorrect regarding three dimensional netwirk silicates ?