The decomposition of sodium azide (NaN₃) does not produce nitride (N^3-). It actually produces sodium metal (Na) and nitrogen gas (N₂). Here's the balanced chemical equation:

2 NaN₃ → 2 Na + 3 N₂

Here's what happens:

* Sodium azide (NaN₃) is a very unstable compound.

* When heated, it decomposes rapidly.

* The decomposition releases nitrogen gas (N₂) and leaves behind sodium metal (Na).

This reaction is the basis for the airbag deployment system in cars. When a collision occurs, a sensor triggers the decomposition of sodium azide, which rapidly inflates the airbag with nitrogen gas.