Which is most stable among above hydrides?

Explanation

To determine which hydride is the most stable among the hydrides of group 15 elements, we can follow these steps:

### Step 1: Identify the Hydrides of Group 15
The hydrides of group 15 elements include:
- Ammonia (NH₃)
- Phosphine (PH₃)
- Arsenic Hydride (AsH₃)
- Stibine (SbH₃)
...