Arun
Last Activity: 7 Years ago
Dear Ayan
An important factor to the stability of a material in solid form is the ability of the molecules to form ordered crystal structures. With azide salts like sodium azide the azide anion forms packed structures in a rather uniform geometry.
These ordered and layered geometries prevent reactive instability at Standard temperature and pressure. If these structures are broken via heating or another reactive species- heavy metals or halogens- then you’ll witness their instability.
Hydrazoic acid is unable to form the nice and neat geometries like the azide salts thus is less stable.
Regards
Arun (askIITians forum expert)