Chemistry

Question Analysis
This question involves VSEPR theory. The main focus is on applying the theory to determine the molecular geometry of a given molecule. 

Key Concept Explanation
According to VSEPR theory, electron pairs around a central atom repel each other and arrange themselves as far apart as possible to minimize repulsion.
The molecular geometry depends on: 1. The number of electron domains (bonding + lone pairs). 2. Whether lone pairs are present.

Step-by-step Solution
1. Structure analysis: Nitrogen has 5 valence electrons and forms 3 single bonds with hydrogen atoms, using three valence electrons. This leaves 1 lone pair on ...