What type of hybridization is associated with N in `NH_3` ?
What is the expected bond angle in `NH_3` ?

Explanation

To determine the hybridization of nitrogen in ammonia (NH₃) and the expected bond angle, we can follow these steps:

### Step 1: Determine the electronic configuration of nitrogen.
- The atomic number of nitrogen (N) is 7. Its electronic configuration is 1s² 2s² 2p³.

### Step 2: Identify the valence electrons.
- In the outermost shell (n=2), nitrogen has 2 electrons in the 2s orbital and 3 electrons in the 2p orbitals, giving it a total of 5 valence electrons.

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