Nitrogen hydride is a general term that can refer to several different compounds, but the most common one is ammonia (NH₃).

Here's the breakdown of the elements in ammonia:

* Nitrogen (N): This is the main element in ammonia, and it contributes one atom to the molecule.

* Hydrogen (H): Three hydrogen atoms bind to the nitrogen atom to form ammonia.

So, the elements in nitrogen hydride (ammonia) are nitrogen and hydrogen.