Bone black is a form of which element?

White lead is

What is the product obtained from the hydrolysis of $(Me)_2SiCl_2$?

The silicate having one monovalent corner oxygen atom in each $SiO_4$ tetrahedron unit is:

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:

$C_{60}$,an allotrope of carbon,contains: