When lead nitrate is heated,it gives

The basic building unit of all silicates is

Consider the following route of reactions $R_2SiCl_2 + H_2O \to (A) \xrightarrow{\text{Polymerisation}} (B)$. Compound $(B)$ in the above reaction is:

Name the type of silicate structure in which one oxygen atom of $SiO_4^{4-}$ is shared with another silicate unit.

At high temperature,nitrogen combines with calcium carbide $(CaC_2)$ to give:

$PbI_4$ does not exist because