The vast majority of silicates are insoluble in water, except alkali metal silicate.
Channel: Doubtnut
Date: 2020-02-16

The vast majority of silicates are insoluble in water, except alkali metal silicate. The extreme stability of silciates is due to the donation of extra electrons from O atoms into the vacant 3d-orbital of Si. The `SiO_(4)` tetrahedral units may occur singly or may share one, two , three of four O atoms through comers giving rise to cycle groups, chains infinite layers of infinite three dimensional frame work. Anion `Si_(3)O_(9)^(x-)` present in beniotite. Then x is