Anhydrous sample of ferric chloride is prepared by heating:

Which one of the following is present in the chain structure of silicates?

Which of the allotropic forms of carbon is aromatic in nature?

The catenation tendency of $C$,$Si$ and $Ge$ is in the order $Ge < Si < C$. The bond energies (in $kJ \ mol^{-1}$) of $C-C$,$Si-Si$ and $Ge-Ge$ bonds,respectively,are:

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

An example of a neutral oxide is