Which out of `NH_3` and `NF_3` has higher dipole moment and why?

Explanation

To determine which molecule, \( NH_3 \) (ammonia) or \( NF_3 \) (nitrogen trifluoride), has a higher dipole moment, we need to analyze the molecular structure and the electronegativity of the atoms involved.

### Step-by-Step Solution:

1. **Understanding Dipole Moment**:
The dipole moment is a measure of the separation of positive and negative charges in a molecule. It depends on the electronegativity of the atoms and the geometry of the molecule.

2. **Molecular Geometry**:
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