Most basic hydride of group 15 elements is ..............

Explanation

To determine the most basic hydride of group 15 elements, we can follow these steps:

### Step 1: Identify Group 15 Elements
Group 15 elements include nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi).

### Step 2: Identify the Hydrides of Group 15 Elements
The hydrides of these elements are:
- Nitrogen: NH₃ (ammonia)
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