An element X of group 15 and period 2 exists as diatomic molecule. It combines with hydrogen and forms ammonia in the presence of a suitable catalyst.
Identify the element X.

Explanation

To identify the element X from the provided information, we can follow these steps:

### Step 1: Identify the Group and Period
The question states that element X belongs to Group 15 and Period 2 of the periodic table.

### Step 2: Determine the Element's Electronic Configuration
Elements in Group 15 have a general electronic configuration of ns² np³. For Period 2, we can write the electronic configuration as:
- 1s² 2s² 2p³
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